tests: add utime.test

* tests/utime.c: New file.
* tests/utime.test: New test.
* tests/Makefile.am (check_PROGRAMS): Add utime.
(TESTS): Add utime.test.
* tests/.gitignore: Add utime.
diff --git a/tests/.gitignore b/tests/.gitignore
index 0cc3964..df25127 100644
--- a/tests/.gitignore
+++ b/tests/.gitignore
@@ -33,6 +33,7 @@
 umovestr
 umovestr2
 unix-pair-send-recv
+utime
 xattr
 *.log
 *.log.*