Add codectest to test targets.

git-svn-id: file:///var/local/repositories/ffmpeg/trunk@6532 9553f0bf-9b14-0410-a0b8-cfaf0461ba5b

Makefile

@@ -250,7 +250,7 @@ TAGS:
 
 # regression tests
 
-libavtest test mpeg4 mpeg test-server fulltest: $(PROGS)
+codectest libavtest test-server fulltest test mpeg4 mpeg: $(PROGS)
 	$(MAKE) -C tests $@
 
 # tar release (use 'make -k tar' on a checkouted tree)