The basic tests now run on Windows correctly without needing to manually
copy any files -- the executables are output in the same location as the
necessary DLLs. However, tests that require *.pyd files (all code in the
Mod subdirectory, basically) still do not work on Windows as the test
executables cannot find those files. This is a work in progress.
Every basic data type is stored in Base module, color is standing out as
one that does not. Moving it to Base opens possibilities to integrate it
better with the rest of FreeCAD.