[En-Nut-Discussion] Nut/OS finally moving to C99 types

[Harald Kipp]

Thiago A. Corrêa wrote:
>     IMHO, we should consider moving return types for many calls to
> bool (_Bool) instead. Makes the code the most readable.

IMHO, this is too C++-ish. There are several discussion about using bool 
with C. My opinion is, that it is not needed. Most C standard routines 
return 0 on success and -1 on errors.

Harald