auto determine which network interface for those platforms where "any" doesn't work
improve the libnet and pcap detects on configure
remove the pcap library
remove the libnet library
improve and standardize error msgs
add configure flag for nonstandard libcap locations
add further paranoia checks for inputs
add a "make detail" option to the makefile that gives configure flags used and install locations
check compatibility with Phil Woods' modified pcap -- http://public.lanl.gov/cpw/
