git-remote-mediawiki: show progress information when listing pages

Initial phases of push and pull with git-remote-mediawiki can be long on
a large wiki. Let the user know what's going on.

Signed-off-by: Matthieu Moy <Matthieu.Moy@imag.fr>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

contrib/mw-to-git/git-remote-mediawiki

@@ -371,6 +371,8 @@ sub get_mw_first_pages {
 sub get_mw_pages {
 	mw_connect_maybe();
 
+	print STDERR "Listing pages on remote wiki...\n";
+
 	my %pages; # hash on page titles to avoid duplicates
 	my $user_defined;
 	if (@tracked_pages) {
@@ -394,6 +396,7 @@ sub get_mw_pages {
 			get_all_mediafiles(\%pages);
 		}
 	}
+	print STDERR (scalar keys %pages) . " pages found.\n";
 	return %pages;
 }