- 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

Per Regents of the University of Calfornia letter, remove advertising
clause.

# If I've done so improperly on a file, please let me know.

Mechanically kill hard sentence breaks.

mdoc(7) police: Tidy up the syscall language.

Stop calling system calls "function calls".

Use "The .Fn system call" a-la "The .Nm utility".

When referring to a non-BSD implementation in
the HISTORY section, call syscall a function,
to be safe.

mdoc(7) police: Use the new .In macro for #include statements.

Grammar police: "its", not "it's", is the possessive form of "it".

mdoc(7) police: use canonical form of .Dd macro.

Introduce ".Lb" macro to libc manpages.

More libraries manpages updates following.

Some style and "look" fixes

Reviewed by: mpp

$Id$ -> $FreeBSD$

Sort cross refereces in section SEE ALSO.

Don't xref setregid(2) twice - one of them should be setreuid(2).

Fix one very minor mdoc problem. Gentle enough, Peter? :-)

General cleanup and update to specify exactly how our implementation
passes on the status across fork/exec.

The previous version had some typos, referred to itself as link(2) in
one place :-), and didn't really match openbsd's implementation either.

Now that I've mentioned typos, hopefully our Typo Police and Xref Police
will be gentle with me. :-)

Steal issetugid man page from OpenBSD. Needs work..

Obtained from: OpenBSD