The index() and rindex() functions were marked LEGACY in the 2001
revision of POSIX and were subsequently removed from the 2008 revision.
The strchr() and strrchr() functions are part of the C standard.
This makes the source code a lot more consistent, as most of these C
files also call into other str*() routines. In fact, about a dozen
already perform strchr() calls.
gets cleaned up upon receiving SIGINT. This un-breaks subsequent
executions of ipfwpcap and helps when debugging network/divert
issues like this:
ipfwpcap -r 6000 - | tcpdump -r -
MFC after: 1 week
