Add libjsonnet_test_locale to the Makefile ALL list

This adds it to the 'all' target and also (more importantly) adds it to
the list of files that are removed by 'make clean'

Author: johnbartholomew

Diff for: Makefile

@@ -82,6 +82,7 @@ LIBS = \
 ALL = \
 	libjsonnet_test_snippet \
 	libjsonnet_test_file \
+	libjsonnet_test_locale \
 	$(BINS) \
 	$(LIBS) \
 	$(LIB_OBJ) \