gitweb: Decode long title for link tooltips

This is a simple one liner to decode long title string in perl's
internal form to utf-8 for link tooltips.

This is not crucial if the commit message is all in ASCII, however, if
you decide to use other encoding, such as UTF-8, tooltips ain't
readable any more.

Signed-off-by: Yasushi SHOJI <yashi@atmark-techno.com>
Signed-off-by: Junio C Hamano <junkio@cox.net>

gitweb/gitweb.perl

@@ -617,7 +617,7 @@ sub format_subject_html {
 
 	if (length($short) < length($long)) {
 		return $cgi->a({-href => $href, -class => "list subject",
-		                -title => $long},
+		                -title => decode("utf8", $long, Encode::FB_DEFAULT)},
 		       esc_html($short) . $extra);
 	} else {
 		return $cgi->a({-href => $href, -class => "list subject"},