Add tests target for libswscale test programs.

git-svn-id: file:///var/local/repositories/mplayer/trunk/libswscale@27888 b3059339-0415-0410-9bf9-f77b7e298cf2

Makefile

@@ -15,6 +15,8 @@ OBJS-$(ARCH_BFIN)          +=  internal_bfin.o
 
 HEADERS = swscale.h
 
+TESTS = cs_test swscale-example
+
 CLEANFILES = cs_test swscale-example
 
 include $(SUBDIR)../subdir.mak