There is no $request here

Is this the right way to define $request to get the limitstart parameter?
There is no $return here
Fix var name
The registry variable is named $config here
Fix silly typo
Merge branch 'master' of https://github.com/joomla/joomla-cms into rlerdorf-take2

Conflicts:
	libraries/joomla/table/nested.php
Merge pull request #1122 from elinw/rlerdorf-take2

Fix a number of wrong variable names and similar items.