- 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

Remove trailing spaces.

Handle MSDOS file systems properly. Before the change file systems
created on Windows XP (and others maybe) were not detected.
We detected only those created with newfs_msdos(8).

Submitted by: Tobias Reifenberger <treif@mayn.de>
style(9)ified by: pjd