Linux 2.6.12-rc6

Getting ready for the real release..
diff --git a/Makefile b/Makefile
index c11a317..9e005e1 100644
--- a/Makefile
+++ b/Makefile
@@ -1,7 +1,7 @@
 VERSION = 2
 PATCHLEVEL = 6
 SUBLEVEL = 12
-EXTRAVERSION =-rc5
+EXTRAVERSION =-rc6
 NAME=Woozy Numbat
 
 # *DOCUMENTATION*