[Etherboot-developers] [COMMIT]

[<ebi...@ln...>]

- Major cleanup to string.h to get rid of warnings and remove useless appearing code.
  The trick is to put the generic declarations after the arch specific ones.
- Have genrules.pl put NIC in bin/
- Introduce __unused instead of __attribute__((unused))
- Introduce braces around declarations that were moved.
- Make size_t unsigned on x86 so gcc does not complain
- In serial.c introduce some defines replacing magic constants so the code is clearer.

Eric