declaration of inet_aton & friends

[strauman at slac.stanford.edu (Till Straumann)]

Eric.

I get warnings that 'inet_aton' (usually declared in <arpa/inet.h>)
has not been declared (rtems 4.9.2).

Seems that the declaration is #if __BSD_VISIBLE only.
However, this preprocessor symbol is nowhere defined (except if
you define the 'inside the stack' symbol and include <rtems/rtems_bsdnet.h>
first).

Any thoughts?

Thanks
- T.