• 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