making the rebase an official thing only, it relies on find, which

seems to not be universally usable

makefile.win

@@ -118,6 +118,7 @@ REBASE=
 !endif
 
 rebase:
+!if defined(MOZILLA_OFFICIAL)
 !if defined(FIND)
 !if defined(REBASE)
 	echo rebasing $(DIST)
@@ -130,6 +131,7 @@ rebase:
 !else
         echo No find defined.
 !endif
+!endif
 
 install:: rebase