- 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

Rework the wording of the comment for the security.bsd.see_other_uids
sysctl a bit.

Approved by: jmallett

Document at least one meaningful RELENG_5 feature, the ability to hide from
a user processes which run with an inequivalent class of UID credentials.

Sponsored by: Rachel Hestilow <rachel@jerkcity.com>

Enable vmiodirenable by default. Remove incorrect comment from sysctl.conf.

MFC after: 1 week

End sentence with a period.

sysctl(8) doesn't need '-w' to write to sysctl variables anymore.

Comment out vfs.vmiodirenable=0 by default, to prevent inproducing another
place where default sysctl value have to be tweaked if we ever would want
to switch kernel default to 1.

Submitted by: dillon

o Install sysctl.conf with all other *.conf files;
o put a note into sysctl.conf describing vfs.vmiodirenable knob.

OK'ed by: alfred

Add this empty version of this file to make it easier for pre-4.0 users
to find.