[Divers] GameEX v5.43

Nouvelle version pour ce frontend multi-émulateurs dont voici les changements depuis hier:

* There is a new Soul Calibur theme available on the downloads page authored by GameEx forum regular and expert Headkaze.
* Fixes big unnecessary slow downs when GameExtender enabled in certain circumstances.
* Sorry about that.
* Fixes GameEx crashing when launching MAME games when not using controls.ini

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