* Add the usual HACKING, AUTHORS, and INSTALL files.
* Add a 'distbin' Make target, which creates a convenience tarball
containing just the generated *.fw files.
+ * Document the download location for the pre-built firmware files tarball.
* If 'objcopy' is not found, try to use sdcc's 'makebin' instead.
This fixes the build e.g. on some Mac OS X systems without 'objcopy'.
* Add support for differently named sdcc tools on various distros.