VcpExplain16(). Added a few useful TRACE lines. Enabled a ifdef'ed
out call to CopyFile() inside of VCP_CopyFiles() so files are copied
to a users directories during an install.
- add some setupx resources
- implement VHSTR functionality
- large parts of VCP callback handling
- merge setupapi and setupx stuff, especially resource handling
gets rid of setupx debug channel; setupapi is the only one that remains