fine tune "no pubkeys" warning

perm categories (like READERS and WRITERS, or whatever you put in your
$GL_WILDREPOS_PERM_CATS) are *supposed* to "have no pubkeys"; don't warn
about them

src/gitolite.pm

@@ -891,6 +891,7 @@ sub setup_authkeys
         my @no_pubkey =
             grep { $_ !~ /^(gitweb|daemon|\@.*|~\$creator)$/ }
                 grep { $user_list_p->{$_} ne 'has pubkey' }
+                    grep { $GL_WILDREPOS_PERM_CATS !~ /(^|\s)$_(\s|$)/ }
                         keys %{$user_list_p};
         if (@no_pubkey > 10) {
             print STDERR "$WARN You have " . scalar(@no_pubkey) . " users WITHOUT pubkeys...!\n";