- 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

Add unicode support to msdosfs and smbfs; original pathes from imura,
bug fixes by Kuan-Chung Chiu <buganini at gmail dot com>.

Tested by me in production for several days at work.

libmchain no longer exports m_fixhdr(); remove it from EXPORT_SYMS.

Export symbols that constitute APIs defined by these
modules.

Note that in the case of 'mii' the API is not clearly
defined, and the symbols exported represent a subset
defined by current usage.

Introduce API for sequential reads/writes (build/dissect) of mbuf chains.

Reviewed by: Ian Dowse <iedowse@maths.tcd.ie>,
Bosko Milekic <bmilekic@technokratis.com>,
Julian Elischer <julian@elischer.org> and arch@/net@
Obtained from: smbfs