- 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

Merge r263842 from HEAD to stable/10:

Update system man pages for s/capability.h/capsicum.h/.

Sponsored by: Google, Inc.

Merge r257633:

- Add manual pages for capability rights (rights(4)), cap_rights_init(3)
family of functions and cap_rights_get(3) function.
- Update remaining Capsicum-related manual pages.

Sponsored by: The FreeBSD Foundation
Reviewed by: bdrewery
Approved by: re (glebius)

- Add manual pages for capability rights (rights(4)), cap_rights_init(3)
family of functions and cap_rights_get(3) function.
- Update remaining Capsicum-related manual pages.

Reviewed by: bdrewery
MFC after: 3 days