misc plus refactor of xhprof so that it can be used during drush requests. these requests show a log statement with the xhprof url at the end (verbose mode)

#601788 by moshe weitzman. devel settings menu item not shown on admin page ... also fix the devel_redirecting feature for d7.

#563842 Major enhancement to SQL query log. There are now 3 variants of a query. Placeholders, arguments, and EXPLAIN. You toggle among them using the new AJAX links beside each query. Needs some CSS help, and a little 'copy to clipboard' feature

Add browser for menu_get_item(). Currently accessed by a new link in Development block. Improvements welcome. Should work for page not found pages though.

Will wonders never cease. Some bling for devel's admin settings. Use #states to hide query log settings when query log itself is disabled.