Merge branch 'jk/use-compat-util-in-test-tool'

Dev tool update.

* jk/use-compat-util-in-test-tool:
  test-tool.h: include git-compat-util.h

t/helper/test-tool.h

 #ifndef __TEST_TOOL_H__
 #define __TEST_TOOL_H__
+#include "git-compat-util.h"
+
 int cmd__chmtime(int argc, const char **argv);
 int cmd__config(int argc, const char **argv);
 int cmd__ctype(int argc, const char **argv);