Import of acpica-unix2-20130418
Merge branch 'acpica'

Conflicts:
	sys/external/bsd/acpica/dist/debugger/dbinput.c
	sys/external/bsd/acpica/dist/debugger/dbmethod.c
	sys/external/bsd/acpica/dist/namespace/nsrepair2.c
Fix forgotten merge, some __UNCONST immediate strings
Fix target