Automatic consistency check of generated vs commited .mo files.

Yeah, this should had gone to trunk, but as the first patch was applied here,
let's follow on and wait for merge.

po/Makefile

@@ -22,7 +22,7 @@
 # Amsterdam, the Netherlands.
 # All rights reserved.
 #
-# The Original Code is: revision 1.2
+# The Original Code is: revision 1.3
 #
 # Contributor(s): Wouter van Heyst, GSR
 #
@@ -50,6 +50,9 @@ LINGUAS_DEST= $(foreach LINGUA, $(LINGUAS),$(DIR)$(LINGUA)/LC_MESSAGES/blender.m
 $(DIR)%/LC_MESSAGES/blender.mo: %.po
 	mkdir -p $(@D)
 	msgfmt -o $@ $<
+	@cmp $@ $(NANBLENDERHOME)/bin/.blender/locale/$(basename $<)/LC_MESSAGES/blender.mo \
+          || ( echo Mismatch between generated and commited $(basename $<).mo catalog && \
+               rm -f $@ && false )
 
 all debug:: $(LINGUAS_DEST)
 #	Just trigger the deps