[fpc-pascal]fpcmake and capital letter filenames

[Marc Santhoff]

Hi again!

Apparently fpcmake has no idea of handling file names with capitals in
them. I use those names for having better readability and sorting
issues.

When the target clean is used, none of the files with capitals is
deleted (.ppu, .o).

I know how to write my own clean target, but maybe there is a switch or
the like to get rid of that?

TIA,
Marc