revert: accept arbitrary rev-list options

This can be useful to do something like:

git rev-list --reverse master -- README | git cherry-pick -n --stdin

without using xargs.

Signed-off-by: Christian Couder <chriscool@tuxfamily.org>
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

builtin/revert.c

@@ -78,7 +78,8 @@ static void parse_args(int argc, const char **argv)
 			die("program error");
 	}
 
-	commit_argc = parse_options(argc, argv, NULL, options, usage_str, 0);
+	commit_argc = parse_options(argc, argv, NULL, options, usage_str,
+				    PARSE_OPT_KEEP_UNKNOWN);
 	if (commit_argc < 1)
 		usage_with_options(usage_str, options);