- 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 r276426:

Remove the svn:executable property from iscsi.4.

MFC r271445,r271446,r271560:
Improve markup and language throughout the ctl.conf man page

MFC r271543:
Add the new iscsi(4) man page
Cross reference it from iscsid(8) and iscsictl(8)

Approved by: re (gjb), bcr (mentor)

Add the new iscsi(4) man page
Cross reference it from iscsid(8) and iscsictl(8)

Reviewed by: trasz
Approved by: bcr (mentor), wblock (mentor)
Sponsored by: ScaleEngine Inc.
CR: https://reviews.freebsd.org/D741