Fix Windows QT5 Paths

.. no longer need to append 'GoldenCheetah' to the location
   since on QT 5 the executable name is used, which is GoldenCheetah

.. by sticking with this we can rename the binary to use a different
   location, which may be useful for testing
Windows Libusb / UsbXpress should be optional

.. ANT.cpp now happily compiles with no USB support
   present on Windows -- which means ANT will obviously
   no longer work, but that may be intended.