t5541: move run_with_cmdline_limit to test-lib.sh

We use this to test http pushing with a restricted
commandline. Other scripts (like t5551, which does http
fetching) will want to use it, too.
Signed-off-by: NJeff King <peff@peff.net>
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

t/t5541-http-push-smart.sh

@@ -324,12 +324,6 @@ test_expect_success 'push into half-auth-complete requires password' '
 	test_cmp expect actual
 '
 
-run_with_limited_cmdline () {
-	(ulimit -s 128 && "$@")
-}
-
-test_lazy_prereq CMDLINE_LIMIT 'run_with_limited_cmdline true'
-
 test_expect_success CMDLINE_LIMIT 'push 2000 tags over http' '
 	sha1=$(git rev-parse HEAD) &&
 	test_seq 2000 |

t/test-lib.sh

@@ -1062,3 +1062,9 @@ test_lazy_prereq UNZIP '
 	"$GIT_UNZIP" -v
 	test $? -ne 127
 '
+
+run_with_limited_cmdline () {
+	(ulimit -s 128 && "$@")
+}
+
+test_lazy_prereq CMDLINE_LIMIT 'run_with_limited_cmdline true'