- 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 r274277:

ctld(8) doesn't require -lcam or -lssl; remove those from DPADD and LDADD.

Sponsored by: The FreeBSD Foundation

MFC r273635, r273793, r274797: Add basic iSNS client to the iSCSI target.

This makes ctld(8) register its iSCSI targets and portals on configured
iSNS servers to allow initiators find them without active discovery.

Fetching of allowed initiators from iSNS is not implemented now, so target
ACLs still should be configured manually.

Relnotes: Yes
Sponsored by: iXsystems, Inc.

MFC r273459:

Untangle iSCSI authentication code by splitting off the CHAP
implementation.

Sponsored by: The FreeBSD Foundation

MFC r270179:

Add missing libraries to DPADD; sort DPADD so DPADD and LDADD match up

This fixes "make checkdpadd"

Approved by: jmmv (mentor)
Phabric: D630
PR: 192765

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

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

Bring in the new iSCSI target and initiator.

Reviewed by: ken (parts)
Approved by: re (delphij)
Sponsored by: FreeBSD Foundation