WP->parse_request() shouldn't look in $GLOBALS

[scribu]

I'm talking about this:

​http://core.trac.wordpress.org/browser/trunk/wp-includes/classes.php?annotate=blame&rev=15793#L266

I'm ​told it's a (very old) feature.

I don't think it makes sense to have it anymore, as it's causing ​problems and register_globals is evil anyway.

[scribu]

(In [15796]) Don't look in in WP->parse_request(). See #15112

[scribu]

From IRC:

(07:21:41 PM) rboren: I think those were for back compat for the days before extra_query_vars

(07:22:30 PM) rboren: I think it is rarely used by plugins/themes these days and can cause inscrutable bugs.

(07:22:41 PM) rboren: So, let's try eliminating it.