- Excluding Cygwin and Win32 from Python check
  * Tends to fail miserably...
- Added more appveyor build info

- Speeds up builds considerably
- Requires stripping out some contents of the gcc arm compiler

- Uses 32 version of Cygwin (on a 64 bit machine)
- Adding PYTHON_EXECUTABLE override variable for Cygwin builds
  * We have to use the system CMake instead of the Cygwin CMake which detects the wrong version of Python
- Update Bootloader build infrastructure to attempt tests on Windows