Remove svn:mergeinfo from the releng/10.0 branch.

After branch creation from stable/10, the stable/10 branch mergeinfo
was moved to the root of the branch.

Since there have not been any merges from stable/10 to releng/10.0
yet, we do not need to track any of the existing mergeinfo here.

Merges to releng/10.0 should now be done to the root of the branch.

For future branches during the release cycle, unless otherwise noted,
this change will be done as part of the stable/ and releng/ branch
creation.

Discussed with: peter
Approved by: re (implicit)
Sponsored by: The FreeBSD Foundation

- Copy stable/10 (r259064) to releng/10.0 as part of the
10.0-RELEASE cycle.
- Update __FreeBSD_version [1]
- Set branch name to -RC1

[1] 10.0-CURRENT __FreeBSD_version value ended at '55', so
start releng/10.0 at '100' so the branch is started with
a value ending in zero.

Approved by: re (implicit)
Sponsored by: The FreeBSD Foundation

Copy head (r256279) to stable/10 as part of the 10.0-RELEASE cycle.

Approved by: re (implicit)
Sponsored by: The FreeBSD Foundation

Update to tcsh 6.18.01.

With retirement of cpumask_t and usage of cpuset_t for representing a
mask of CPUs, pc_other_cpus and pc_cpumask become highly inefficient.

Remove them and replace their usage with custom pc_cpuid magic (as,
atm, pc_cpumask can be easilly represented by (1 << pc_cpuid) and
pc_other_cpus by (all_cpus & ~(1 << pc_cpuid))).

This change is not targeted for MFC because of struct pcpu members
removal and dependency by cpumask_t retirement.

MD review by: marcel, marius, alc
Tested by: pluknet
MD testing by: marcel, marius, gonzo, andreast

etire the cpumask_t type and replace it with cpuset_t usage.

This is intended to fix the bug where cpu mask objects are
capped to 32. MAXCPU, then, can now arbitrarely bumped to whatever
value. Anyway, as long as several structures in the kernel are
statically allocated and sized as MAXCPU, it is suggested to keep it
as low as possible for the time being.

Technical notes on this commit itself:
- More functions to handle with cpuset_t objects are introduced.
The most notable are cpusetobj_ffs() (which calculates a ffs(3)
for a cpuset_t object), cpusetobj_strprint() (which prepares a string
representing a cpuset_t object) and cpusetobj_strscan() (which
creates a valid cpuset_t starting from a string representation).
- pc_cpumask and pc_other_cpus are target to be removed soon.
With the moving from cpumask_t to cpuset_t they are now inefficient
and not really useful. Anyway, for the time being, please note that
access to pcpu datas is protected by sched_pin() in order to avoid
migrating the CPU while reading more than one (possible) word
- Please note that size of cpuset_t objects may differ between kernel
and userland. While this is not directly related to the patch itself,
it is good to understand that concept and possibly use the patch
as a reference on how to deal with cpuset_t objects in userland, when
accessing kernland members.
- KTR_CPUMASK is changed and now is represented through a string, to be
set as the example reported in NOTES.

Please additively note that no MAXCPU is bumped in this patch, but
private testing has been done until to MAXCPU=128 on a real 8x8x2(htt)
machine (amd64).

Please note that the FreeBSD version is not yet bumped because of
the upcoming pcpu changes. However, note that this patch is not
targeted for MFC.

People to thank for the time spent on this patch:
- sbruno, pluknet and Nicholas Esborn (nick AT desert DOT net) tested
several revision of the patches and really helped in improving
stability of this work.
- marius fixed several bugs in the sparc64 implementation and reviewed
patches related to ktr.
- jeff and jhb discussed the basic approach followed.
- kib and marcel made targeted review on some specific part of the
patch.
- marius, art, nwhitehorn and andreast reviewed MD specific part of
the patch.
- marius, andreast, gonzo, nwhitehorn and jceel tested MD specific
implementations of the patch.
- Other people have made contributions on other patches that have been
already committed and have been listed separately.

Companies that should be mentioned for having participated at several
degrees:
- Yahoo! for having offered the machines used for testing on big
count of CPUs.
- The FreeBSD Foundation for having sponsored my devsummit attendance,
which has been instrumental.
- Sandvine for having offered offices and infrastructure during
development.

(I really hope I didn't forget anyone, if it happened I apologize in
advance).

Remove unused GPL files from tcsh.

Merger of the quota64 project into head.

This joint work of Dag-Erling Smørgrav and myself updates the
FFS quota system to support both traditional 32-bit and new 64-bit
quotas (for those of you who want to put 2+Tb quotas on your users).

By default quotas are not compiled into the kernel. To include them
in your kernel configuration you need to specify:

options QUOTA # Enable FFS quotas

If you are already running with the current 32-bit quotas, they
should continue to work just as they have in the past. If you
wish to convert to using 64-bit quotas, use `quotacheck -c 64';
if you wish to revert from 64-bit quotas back to 32-bit quotas,
use `quotacheck -c 32'.

There is a new library of functions to simplify the use of the
quota system, do `man quotafile' for details. If your application
is currently using the quotactl(2), it is highly recommended that
you convert your application to use the quotafile interface.
Note that existing binaries will continue to work.

Special thanks to John Kozubik of rsync.net for getting me
interested in pursuing 64-bit quota support and for funding
part of my development time on this project.

Fix tcsh losing history when tcsh terminates because the pty beneath it
is closed.

Diagnosed by Ted Anderson:

New signal queuing logic was introduced in 6.15 and allows the signal handlers
to be run explicitly by calling handle_pending_signals, instead of
immediately when the signal is delivered. This function is called at
various places, typically when receiving a EINTR from a slow system call
such as read or write. In the pty exit case, it was called from xwrite,
called from flush, while printing the "exit" message after receiving EOF
when reading from the pty (note that the read did not return EINTR but
zero bytes, indicating EOF). The SIGHUP handler, phup(), called
rechist, which opened the history file and began writing the merged
history to it. This process invoked flush recursively to actually write
the data. In this case, however, the flush noticed it was being called
recursively and decided fail by calling stderror.

My conclusion was that the signal was being handled at a bad time. But
whether to fix flush not to care about the recursive call, or to handle
the signal some other time and when to handle it, was unclear to me.
However, by adding an extra call to handle_pending_signals, just after
process() returns to main(), I was able to avoid the truncated history
after network outages and similar failures. I verified this fix in
version 6.17.

Approved by: ed (mentor)
MFC after: 1 week

Update to tcsh 6.17.00.

Approved by: re (kensmith)

Bootstrap merge history.

Approved by: re

Usermode portion of the support for swap allocation accounting:
- update for getrlimit(2) manpage;
- support for setting RLIMIT_SWAP in login class;
- addition to the limits(1) and sh and csh limit-setting builtins;
- tuning(7) documentation on the sysctls controlling overcommit.

In collaboration with: pho
Reviewed by: alc
Approved by: re (kensmith)

Actually fix pty detection for autologout setting.
(The fix has been submitted upstream.)

tcsh: fix abort in cleanup_until(), caused by internal xgetpass()

The xgetpass() function pushes a cleanup entry for &osa, but then
attempts to flush the stack until an entry matching &sa. The two
object pointers do not match, so the stack is popped too much,
and then cleanup_until calls abort() when it unexpectedly hits
the bottom of the cleanup stack.

Reported by: Paul B. Mahol, onemda at gmail.com,
Pietro Cerutti, gahr at gahr.ch
PR: bin/124191
Reviewed by: mp, kris
MFC after: 2 days

This commit was generated by cvs2svn to compensate for changes in r177128,
which included commits to RCS files with non-trunk default branches.

This commit was generated by cvs2svn to compensate for changes in r172668,
which included commits to RCS files with non-trunk default branches.

This commit was generated by cvs2svn to compensate for changes in r172665,
which included commits to RCS files with non-trunk default branches.

This commit was generated by cvs2svn to compensate for changes in r168305,
which included commits to RCS files with non-trunk default branches.

Build updates for tcsh-6.15.00 import.

Reviewed by: ume
Reminded by: Divacky Roman
MFC after: 1 week

This commit was generated by cvs2svn to compensate for changes in r167465,
which included commits to RCS files with non-trunk default branches.

Remove the nls/*/charset files to the exclude list. These files
are required for NLS catalog support.

This commit was generated by cvs2svn to compensate for changes in r155832,
which included commits to RCS files with non-trunk default branches.

This commit was generated by cvs2svn to compensate for changes in r145479,
which included commits to RCS files with non-trunk default branches.

Add the nls/*/charset files to the exclude list. These files are not needed
and only provide comments in the text NLS files.

This commit was generated by cvs2svn to compensate for changes in r131962,
which included commits to RCS files with non-trunk default branches.

Document upgrade procedure.

This commit was generated by cvs2svn to compensate for changes in r100616,
which included commits to RCS files with non-trunk default branches.

This commit was generated by cvs2svn to compensate for changes in r90446,
which included commits to RCS files with non-trunk default branches.

This commit was generated by cvs2svn to compensate for changes in r83098,
which included commits to RCS files with non-trunk default branches.

This commit was generated by cvs2svn to compensate for changes in r73393,
which included commits to RCS files with non-trunk default branches.

This file not present in 6.10

This commit was generated by cvs2svn to compensate for changes in r69408,
which included commits to RCS files with non-trunk default branches.

This commit was generated by cvs2svn to compensate for changes in r68332,
which included commits to RCS files with non-trunk default branches.

This commit was generated by cvs2svn to compensate for changes in r61524,
which included commits to RCS files with non-trunk default branches.

This commit was generated by cvs2svn to compensate for changes in r61521,
which included commits to RCS files with non-trunk default branches.

This commit was generated by cvs2svn to compensate for changes in r61519,
which included commits to RCS files with non-trunk default branches.

This commit was generated by cvs2svn to compensate for changes in r61515,
which included commits to RCS files with non-trunk default branches.

This commit was generated by cvs2svn to compensate for changes in r59901,
which included commits to RCS files with non-trunk default branches.

This commit was generated by cvs2svn to compensate for changes in r59419,
which included commits to RCS files with non-trunk default branches.

This commit was generated by cvs2svn to compensate for changes in r59415,
which included commits to RCS files with non-trunk default branches.

This commit was generated by cvs2svn to compensate for changes in r59243,
which included commits to RCS files with non-trunk default branches.