git-svn: Protect against "diff.color = true".

If the configuration of the user has "diff.color = true", the
output from "log" we invoke internally added color codes, which
broke the parser.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
Tested-by: Johannes Schindelin <Johannes.Schindelin@gmx.de>
Acked-by: Eric Wong <normalperson@yhbt.net>

git-svn.perl

@@ -807,7 +807,7 @@ sub cmt_metadata {
 
 sub working_head_info {
 	my ($head, $refs) = @_;
-	my ($fh, $ctx) = command_output_pipe('log', $head);
+	my ($fh, $ctx) = command_output_pipe('log', '--no-color', $head);
 	my $hash;
 	my %max;
 	while (<$fh>) {
@@ -2072,7 +2072,7 @@ sub rebuild {
 		return;
 	}
 	print "Rebuilding $db_path ...\n";
-	my ($log, $ctx) = command_output_pipe("log", $self->refname);
+	my ($log, $ctx) = command_output_pipe("log", '--no-color', $self->refname);
 	my $latest;
 	my $full_url = $self->full_url;
 	remove_username($full_url);