git-remote: support remotes with a dot in the name

[jc: the original from Pavel was limiting the variable names to only
 fetch and url, but I loosened it to take valid variable names.]
[jc: cherry-picked from 'master', since people seem to be reinventing
 this many times.]

Signed-off-by: Pavel Roskin <proski@gnu.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>

git-remote.perl

@@ -67,7 +67,7 @@ sub list_remote {
 		$git->command(qw(config --get-regexp), '^remote\.');
 	};
 	for (@remotes) {
-		if (/^remote\.([^.]*)\.(\S*)\s+(.*)$/) {
+		if (/^remote\.(\S+?)\.([^.\s]+)\s+(.*)$/) {
 			add_remote_config(\%seen, $1, $2, $3);
 		}
 	}