Disable Domain Access on cron runs

Hm... this function, domain_grant_all(), actually needs some more love.

First: if variable_get('domain_cron_rule', 1) returns a non-null value, we're leaving the big if-elseif-else construct, which means the paths will never been checked. Therefore we have to do the next check as long as $grant is still set to FALSE.

Second, I've removed that obscure $grant['set'] variable, which is a possible cause for this bug report (which I have also observed): half of the function assigns a boolean value to the static variable, whereas the other half assigns to (and expects it to be) an array with only one key, 'set'.

Third, some non-working code has been fixed: $page_match || preg_match($regexp, $_GET['q']); which should actually be assigned to $page_match.

Fourth, I've exchanged the comparison of path alias and original path, to make the call to drupal_get_path_alias() only when the previous check didn't yield a positive result (ie. a performance optimization).

I have tested it with a node (node/1) and its path alias (article-1). When adding node/* to the Special Pages, some debugging code showed me the first preg_match() immediately returning a non-zero value when trying to access the node. When adding article* instead, it's the second preg_match() that, after fetching the url alias, yields a positive result.

Uh, yes, I had noticed it and uploaded an edited patch shortly after submitting it... reuploading seems to be safer.