kickoff 2011.05 development cycle

Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>

CHANGES

@@ -1,3 +1,5 @@
+2011.05, Not released yet:
+
 2011.02, Released February 28th, 2011:
 
 	Fixes all over the tree.

Makefile

@@ -24,7 +24,7 @@
 #--------------------------------------------------------------
 
 # Set and export the version string
-export BR2_VERSION:=2011.02
+export BR2_VERSION:=2011.05-git
 
 # This top-level Makefile can *not* be executed in parallel
 .NOTPARALLEL: