push: add --quiet flag

Some transports produce output even without "--verbose"
turned on. This provides a way to tell them to be more
quiet (whereas simply redirecting might lose error
messages).

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

builtin-push.c

@@ -168,6 +168,7 @@ int cmd_push(int argc, const char **argv, const char *prefix)
 	const char *repo = NULL;	/* default repository */
 
 	struct option options[] = {
+		OPT_BIT('q', "quiet", &flags, "be quiet", TRANSPORT_PUSH_QUIET),
 		OPT_BIT('v', "verbose", &flags, "be verbose", TRANSPORT_PUSH_VERBOSE),
 		OPT_STRING( 0 , "repo", &repo, "repository", "repository"),
 		OPT_BIT( 0 , "all", &flags, "push all refs", TRANSPORT_PUSH_ALL),

transport.h

@@ -36,6 +36,7 @@ struct transport {
 #define TRANSPORT_PUSH_MIRROR 8
 #define TRANSPORT_PUSH_VERBOSE 16
 #define TRANSPORT_PUSH_PORCELAIN 32
+#define TRANSPORT_PUSH_QUIET 64
 
 /* Returns a transport suitable for the url */
 struct transport *transport_get(struct remote *, const char *);