[Eric] change default pyuic4 output filename

[Imre Horváth]

Hi!

I'm using eric 3.9.5 with qt4.
When I compile a form, it's generate a Ui_formname.py file. There's no
problem with that.
My question is: how can i change the Ui_ prefix for the generated python files?
(e.g. ui_formname.py with lowercase u)

Thanks for advance:
Imre Horvath