[CMake] DLL and EXE with same base name: clash in VS.

[Alexey Livshits]

> CMake uses prefix+base+".pdb" to generate the PDB file name, however I
> didn't dig deep enough to find out what `base' is, just that it is
> obtained with cmTarget::GetName(). Whether that refers to the target
> name or the OUTPUT_NAME, I couldn't find out easily, so you'll have to
> experiment ;-)

You're right :o
-- 
BG,
Alexey