Add simple testcases for fcntl(F_DUP2FD_CLOEXEC).
Don't use the old stack-walking code with
EABI ARM kernels or clang-compiled ARM kernels.

This fixes a crash seen in clang-compiled ARM
kernels that include WITNESS.

This code could be easily modified to walk the stack
for current clang-generated code (including EABI)
but Andrew Turner has raised concerns that the
stack frame currently emitted by clang isn't actually
required by EABI so such a change might cause problems
down the road.

In case anyone wants to experiment, the change
to support current clang-compiled kernels
involves simply setting FR_RFP=0 and FR_SCP=1.
Intel's 320-series and 510-series SSDs advertise 512-byte sectors
sizes for both logical and physical. Add ADA_Q_4K quirks
for both.

PR:		kern/178040
Submitted by:	Jeremy Chadwick <jdc@koitsu.org>
Unconditionally install 210.backup-aliases as many MTAs other than
sendmail support the use of /etc/aliases.

PR:		conf/176098
Submitted by:	ak
MFC after:	2 weeks
Whitespace.
Comments.
Remove duplicated string.
Fix i18n violations in the package management module. A few words like
`packages', `installed', and `selected' were not internationalized.
Comment.
Turns out that there really isn't an RTC chip on this board, at all.
Tidy up some CVS workarounds.
Some filesystems (NFS in particular) do not fill out the d_type field when
returning directory entries through readdir(3). In this case we need to
obtain the file type ourselves; otherwise newsyslog -t will not be able to
find archived log files and will fail to both delete old log files and to
do interval-based rotations properly.

Reported by:	jilles
Reviewed by:	jilles
MFC after:	2 weeks
Update the gcc43 changelog.

The issue solved in r250392 actually originated upstream and was
fixed in upstream gcc43 branch in 2006/10/24 (under GPLv2).

Register it in the appropriate ChangeLog for reference.

MFC after:	3 days
 - Add a new general purpose path-compressed radix trie which can be used
   with any structure containing a uint64_t index.  The tree code
   auto-generates type safe wrappers.
 - Eliminate the buf splay and replace it with pctrie.  This is not only
   significantly faster with large files but also allows for the possibility
   of shared locking.

Reviewed by:    alc, attilio
Sponsored by:   EMC / Isilon Storage Division
Add the letter 'x' to the font iso05-8x16.fnt

PR:	169797
Submitted by:	Takefu <takefu@airport.fm>
MFC after:	3 days
Typo.