This reverts commit 743541f7.

This reverts commit 5b2113e5, reversing
changes made to fee1b126.

Added table prefix feature

Set prefix with a own method.

Set a prefix with the connection...

Merge from avbdr

Added update "column = !column"

Useful for changing booleans in DB.
Update like this:

...
$db->update("table", array("col_boolean" => $db->not()));