QTfrontend: Fix flickering and bad offset of control config popup If you opened the pop-up to change a key, there was a very short flicker at the left side and the pop-up had a bad offset which sometimes caused entries to be out of screen bounds.

This is version 3.1 of the iniparser library developed by N. Devillard.
See http://ndevilla.free.fr/iniparser/ for details and new versions.