- 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

ANSIfy almost all applications that use WARNS=6.

I was considering committing all these patches one by one, but as
discussed with brooks@, there is no need to do this. If we ever
need/want to merge these changes back, it is still possible to do this
per application.

Make this WARNS=6 clean by prototyping 'usage'.

Tested by: make universe

Use __FBSDID() to quiet GCC 3.3 warnings.

Include missing header files which define functions for which gcc has
builtins (e.g., exit, strcmp).

Remove the use of a dash in the usage, since this isn't in keeping
with other utilities which offer similar functionality.

This change was discussed with ache, who brought in the ability to
use a dash to represent stdin in comcontrol.

Print options only supported by device, back out printing options separately

Pointed-by: bde

Allow "-" for working with STDIN
Allow printing of each option separately when keyword specified without a
number

$Id$ -> $FreeBSD$

Add rcsid. Remove unused #includes. Use err(3).

Remove excessive argc checking. It was impossible to set `dtrwait' and
and `drainwait' in a single command.

Fight agaist hanging modems: add new drainwait option.
Reviewed by: Bruce

From Bde:
o Removed bidir options.

Modified for work without options COM_BIDIR into kernel.

Add 'dtrwait <n>' option to comcontrol to handle
TIOCM[SG]DTRWAIT ioctl.

Initial import, 0.1 + pk 0.2.4-B1