- 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

MFC r267757:

cxgbe(4): Update the bundled T4 and T5 firmwares to versions 1.11.27.0

Obtained from: Chelsio

cxgbe(4): Update the bundled T4 and T5 firmwares to versions 1.11.27.0.

Obtained from: Chelsio
MFC after: 3 days