win32: Core project compiles with VS 2012 and gcc-4.7.3

The core project now compiles with VS 2012.
The libusb10emu layer is deprecated because the latest [libusb](http://libusb.info) has native isochronous transfers.
AUDIO, examples, and pthreads were not tested.


Signed-off-by: Benn Snyder <benn.snyder@gmail.com>