@all for repos is now much cleaner; a true @all...

- no need to put it at the end of the config file now, yeaaay!
  - @all for @all is meaningless and not supported.  People asking will
    be told to get a life or use git-daemon.
  - NAME/ limits for @all repos is ignored for efficiency reasons.

src/gl-auth-command

@@ -188,6 +188,7 @@ my $perm = ($verb =~ $R_COMMANDS ? 'R' : 'W');
 
 die "$perm access for $repo DENIED to $user\n"
     unless $repos{$repo}{$perm}{$user}
+        or $repos{'@all'}{$perm}{$user}     # new: access to @all repos
         or $repos{$repo}{$perm}{'@all'};
 
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