Made the LED toggle atomic.
Added a define to disable activity LEDs.
added a todolist in the readme.
added a function to set UART baudrate.
changed ip adress.

The old one was conflicting with the ethernet network.
added useful debug notes in the readme.
workaround for altera lack of rw support.

Altera doesn't support opening a port for read write,
but allows us to open the same port in read and write
at the same time. We still need to test it though.
fixed unix build.
use a different ip in unix testing.

For some reason I cannot use the 192.168.4.9 adress to test on my
machine. Using 10.0.0.2 fixes it (and is standard too).