- 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

See wiki for setup details -> https://github.com/kiibohd/controller/wiki/Windows-Setup

- 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

bash might not be in /bin. Don't expect it there.

The compilation process itself doesn't take very long, but it's weird to
let it continue trying to build when we've encountered an error worthy
of changing cmake/make's return codes. This gives clear indication of a
failed build as the last line of the script's output.

- Includes minor fix for MD1

TODO:
 - Add Windows Cygwin support