Implement -v (verbose) option for pull methods other than local transport.

This moves the private "say()" function to pull.c, renames it to
"pull_say()", and introduces a global variable "get_verbosely" that
makes the pull backends report what they fetch.  The -v option is
added to git-rpull and git-http-pull to match git-local-pull.

The documentation is updated to describe these pull commands.

Signed-off-by: Junio C Hamano <junkio@cox.net>
diff --git a/rpull.c b/rpull.c
index 75f8f94..b48e631 100644
--- a/rpull.c
+++ b/rpull.c
@@ -14,8 +14,12 @@
 
 int fetch(unsigned char *sha1)
 {
+	int ret;
 	write(fd_out, sha1, 20);
-	return write_sha1_from_fd(sha1, fd_in);
+	ret = write_sha1_from_fd(sha1, fd_in);
+	if (!ret)
+		pull_say("got %s\n", sha1_to_hex(sha1));
+	return ret;
 }
 
 int main(int argc, char **argv)
@@ -33,11 +37,13 @@
 			get_all = 1;
 			get_tree = 1;
 			get_history = 1;
+		} else if (argv[arg][1] == 'v') {
+			get_verbosely = 1;
 		}
 		arg++;
 	}
 	if (argc < arg + 2) {
-		usage("rpull [-c] [-t] [-a] commit-id url");
+		usage("git-rpull [-c] [-t] [-a] [-v] commit-id url");
 		return 1;
 	}
 	commit_id = argv[arg];