3) add some new functions to etherpkt. 4) checkin the nice ping_linux.ini that i've been using.
dev/etherpkt.hh:
remove the packet headers nate hated so much.
also add some new functionality regarding packets, like isIpHdr(), etc.
dev/ns_gige.cc:
improve the code given the nice new functions offered in etherpkt
--HG--
extra : convert_revision : 2e27f5a8dca5323c0fa22d3c51af44a35f6be1a2