- 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

- Added clang (i.e. multi-compiler) support to convenience build scripts
- Updated README
- Added Bootloader build scripts for the two main versions currently used
- Added uartOut and usbMuxUart build scripts (these tend to suffer from build rot the most as they're only used in debugging)
- Attempt to get clang support for the Bootloader
  * clang is missing compiler extensions, so this may require a large re-write to get working