- Copy stable/10@296371 to releng/10.3 in preparation for 10.3-RC1
builds.
- Update newvers.sh to reflect RC1.
- Update __FreeBSD_version to reflect 10.3.
- Update default pkg(8) configuration to use the quarterly branch.

Approved by: re (implicit)

MFC r277541:

r277541:

Add sample log rotation support for opensm

Up to 7 archives of the log will be kept (just for consistency with the other
log rotation rules)

PR: 196788
Reviewed by: hselasky
Sponsored by: EMC / Isilon Storage Division

Add sample log rotation support for opensm

Up to 7 archives of the log will be kept (just for consistency with the other
log rotation rules)

PR: 196788
MFC after: 1 week
Reviewed by: hselasky
Sponsored by: EMC / Isilon Storage Division