* Makefile.am: ignore tests/ for make cc10 and make line33

Makefile.am

@@ -43,6 +43,7 @@ tags:
 cc10:
 	@$(PMCCABE) `find -name '*.c' -o -name '*.cc'`		\
 	| grep -v mu-str-normalize.c				\
+	| grep -v tests						\
 	| sort -nr | awk '($$1 > 10)'
 
 # this warns about functions that are over 33 non-comment lines long, which is a
@@ -52,6 +53,7 @@ cc10:
 line33:
 	@$(PMCCABE) -c `find -name '*.c' -o -name '*.cc'`	\
 	 | grep -v mu-str-normalize.c				\
+	 | grep -v tests					\
          | awk '($$5 > 33)'
 
 # get all todo/fixme messages