Linux 2.6.21-rc6

.. perfect? Ahh, sure.
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

Makefile

 VERSION = 2
 PATCHLEVEL = 6
 SUBLEVEL = 21
-EXTRAVERSION = -rc5
+EXTRAVERSION = -rc6
 NAME = Nocturnal Monster Puppy
 
 # *DOCUMENTATION*