Makefile: let clar header targets depend on their scripts

The targets that generate clar headers depend on their source files, but
not on the script that is actually generating the output. Fix the issue
by adding the missing dependencies.

Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

Author: pks-t

Makefile

@@ -3904,9 +3904,9 @@ GIT-TEST-SUITES: FORCE
 		echo "$$FLAGS" >GIT-TEST-SUITES; \
             fi
 
-$(UNIT_TEST_DIR)/clar-decls.h: $(patsubst %,$(UNIT_TEST_DIR)/%.c,$(CLAR_TEST_SUITES)) GIT-TEST-SUITES
+$(UNIT_TEST_DIR)/clar-decls.h: $(patsubst %,$(UNIT_TEST_DIR)/%.c,$(CLAR_TEST_SUITES)) $(UNIT_TEST_DIR)/generate-clar-decls.sh GIT-TEST-SUITES
 	$(QUIET_GEN)$(SHELL_PATH) $(UNIT_TEST_DIR)/generate-clar-decls.sh "$@" $(filter %.c,$^)
-$(UNIT_TEST_DIR)/clar.suite: $(UNIT_TEST_DIR)/clar-decls.h
+$(UNIT_TEST_DIR)/clar.suite: $(UNIT_TEST_DIR)/clar-decls.h $(UNIT_TEST_DIR)/generate-clar-suites.sh
 	$(QUIET_GEN)$(SHELL_PATH) $(UNIT_TEST_DIR)/generate-clar-suites.sh $< $(UNIT_TEST_DIR)/clar.suite
 $(UNIT_TEST_DIR)/clar/clar.o: $(UNIT_TEST_DIR)/clar.suite
 $(CLAR_TEST_OBJS): $(UNIT_TEST_DIR)/clar-decls.h