remove ct_api.h includes, added gcc support

Greetings,

I couldn't resist and added gcc support to datenkrake firmware. Tested with GNU Tools for ARM Embedded Processors ( https://launchpad.net/gcc-arm-embedded/+download ) and flashed via jtag.

But I'am to dumb to test the lpc on-rom bootloader flasher, maybe you have more luck.

cya

andy