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

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

Backout libinstall.a -> libpkg commit.

Discussed with: erwin, brooks, bapt

- Take libinstall.a out of pkg_install and make it a proper shared library.
- Rework the wrapper support to check libpkg version as well as pkg_install
version.
- Add libfetch to _prebuild_libs.
- There are no new features introduced.

Notes: the API is not stable, so basically, do not use libpkg in your
projects for now. Also there's no manpage for libpkg yet, because the API
will change drastically. I repeat, do not use libpkg for now.

The last big commit: let usr.sbin/ use WARNS=6 by default.

Don't put DEBUG to CFLAGS, we have the standard DEBUG_FLAGS for this.

- pkg_add spawns itself as argv[0] when installing dependent packages, to
enable the use as a port on older systems

- use absolute paths in all calls to external programs, to account for strange
PATH settings

- use INDEX or INDEX-5 depending on FreeBSD version, to enable the use on
FreeBSD 4.x as a port.

- conditionalize all 4.x/5.x differences on __FreeBSD_version, so that the
pkg_install tools can be kept in sync on 4.x and 5.x

- Bump PKG_INSTALL_VERSION

Reviewed by: portmgr (bento run)
MFC after: 4 weeks

- Properly build both crypto and non-crypto versions of the
package management tools.

- Drop redundant dependency of pkg_create(1) and pkg_delete(1)
on crypto libraries now that they do not link with libfetch.

Retire the useless NOSECURE knob.

Approved by: re (scottl)

Fix a long-standing bug where if the package being deleted had no
post-deinstall script, the variable intended to hold the name of that
script would be used uninitialized. In some cases, fexists() would
succeed, causing pkg_delete to try to chmod +x it, then execute it,
resulting in bizarre error messages such as:

.//: Permission denied

This bug would normally only occur when multiple packages were
specified on the command line; otherwise post_script would be located
in a previously unused part of the stack, and implicitly (but quite
accidentally) initialized to all-zeros.

MFC after: 3 days

Break fileGetURL() out into its own file so that pkg_install/lib consumers
pkg_{create,delete} don't need to needlessly link with libfetch.

Reorder libraries to fix static linking (libssl depends on libcrypto, so
it must come before libcrypto in LDADD)

Reviewed by: bde

libfetch now depends on libcrypto and libssl.

WARNS=2 cleanup.

Tested on: i386, alpha
MFC after: 2 weeks

Perform a major cleanup of the usr.sbin Makefiles.
These are not perfectly in agreement with each other style-wise, but they
are orders of orders of magnitude more consistent style-wise than before.

Use libfetch instead of libftpio. This adds support for http and IPv6.

$Id$ -> $FreeBSD$

Use `foo/bar.a' instead of `-Lfoo -lbar' for linking to static internal
libraries, so that `ld -f' in can create correct dependencies for
yet-to-be-built libraries.

Add MD5 checksums to packing list for all files during pkg_create and use
later at pkg_delete time to verify that you're deleting what you added.
This, of course, does NOT cover the case where a file you still need
hasn't changed! That's a tougher problem to solve, and this provides
only the minimal amount of safety belt. MD5 checksums are stored in comment
fields, so packages produced with these tools are backwards compatible with
the older ones.

Bring in my changes for removing the pestilent obj links (unless you
really want them) from /usr/src. This is the final version of the
patches, incorporating the feedback I've received from -current.

Make pkg_install understand and use libftpio instead of its own
copies of the ftp support routines. Also some cosmetic and minor
bug fixes I've been meaning to incorporate for awhile.

Remove useless -lftp arguments from Makefiles.
Suggested by: ache

Add depend on libftp since this is now in lib.

1. Add proper dependencies to the library in my Makefiles. This was pointed
out by Bruce.
2. Add a "feature" to pkg_create (OK, OK, it's a miserable hack!) to get
it to dump its internal packing list out so that the `fake-pkg' rule in
bsd.port.mk can generate a more meaningful packing list.

Now works with/without obj directories

Lots of misc tweaks, support for arbitrary separators in pkg_info, more
intelligent name handling in pkg_create. Most of these files are changed
because of rcsid's being different in my cvs tree and freefall's (foo).

This commit was generated by cvs2svn to compensate for changes in r327,
which included commits to RCS files with non-trunk default branches.

The release version of my package install suite. Please see man pages
for info.