- Copy stable/10@285827 to releng/10.2 in preparation for 10.2-RC1
builds.
- Update newvers.sh to reflect RC1.
- Update __FreeBSD_version to reflect 10.2.
- Update default pkg(8) configuration to use the quarterly branch.[1]

Discussed with: re, portmgr [1]
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

Add ASUS P5KPL-C to the list of supported motherboard.

Reported by: < nikola.lecic <at> anthesphoria dot net >

ASUS G2S notebook is supported by age(4).

Reported by: Chad Albert ( chad.albert AT healthcarefirst DOT com )

Add man page for age(4).
brueffer fixed various nits in the document.

Reviewed by: brueffer