layerman: bump meta-nslu2

Signed-off-by: Koen Kooi <koen@dominion.thruhere.net>
layerman: update meta-beagleboard

Signed-off-by: Koen Kooi <koen@dominion.thruhere.net>
Merge remote-tracking branch 'upstream/angstrom-v2014.06-yocto1.6' into angstrom-v2014.06-yocto1.6

Conflicts:
	sources/layers.txt