- 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)

MFH (r262530): fix is_upper() predicate (almost two years late...)
MFH (r271614): remove incorrect svn properties
MFH (r274145): cast-qual bugs in tests
MFH (r288070): restore correct module search path semantics

Also merge upstream r854, committed to head as part of r280031, which
fixes cast-qual bugs in libpam itself.

Copy head (r256279) to stable/10 as part of the 10.0-RELEASE cycle.

Approved by: re (implicit)
Sponsored by: The FreeBSD Foundation

Update to OpenPAM Nummularia.

Update to OpenPAM Micrampelis.

Vendor import of OpenPAM Micrampelis.