[Patch] 'make dist-clean' should clean more files

[WANG Cong]

Signed-off-by: WANG Cong <xiyou.wangcong at gmail.com>

---
diff --git a/Makefile.in b/Makefile.in
index b51c3a1..341e170 100644
--- a/Makefile.in
+++ b/Makefile.in
@@ -233,6 +233,8 @@ distclean: dist-clean
 
 dist-clean: clean
 	$(RM) -f config.log config.status config.cache Makefile include/config.h
+	$(RM) -f include/config.h.in configure
+	$(RM) -rf autom4te.cache
 
 install: $(TARGETS)
 	for file in $(TARGETS) ; do \