- 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 270153, 270098:

Apply a fixes to problems found while converting to NEWCONS.

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

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

Fix the '\' next to lshift for users of Belgian keyboards.

Submitted by: Glenn Matthys <glenn@opengate.be>
Approved by: njl

Shift+Ins - paste buffer
Shift+PrintScr - prev. screen

Add the Euro character on AltGr + E in these european keymaps as well.

Reminded by: Anders Andersson <anders@sanyusan.se>
alex@big.endian.de (Alexander Langer)

Add FreeBSD ID tags while I'm here, since people often copy an exiting
keyboard map and then edit that and try to commit it.

- Fix Belgian keyboard map (be.iso.kbd).
- Add Belgian keyboard map with dead keys (be.iso.acc.kbd).

Tested and corrections submitted by: "Renaud Fivet" <rfi@ntc.be>