According to a report the my_inet_aton code in bond_main.c is copied
from 4.4BSD, but it doesn't carry a BSD copyright license. In addition
it is somewhat redundant with the standard in_aton.  Convert it
to use the linux function.

Error handling is a bit worse than before, but not much.

Patch for 2.5 bonding. The 2.4 version has the same problem, but afaik
it is scheduled to be replaced by the 2.5 codebase anyways.

-Andi