'make test' fails on little endian systems

[aturner]

libpcap always writes in host byte order. The result is that tcprewrite's tests fail on little endian systems because test/test.pcap is in big endian format. suck.

[aturner]

(In [1763]) use test2.rewrite_* for little endian tests. fixes #64

[aturner]

(In [1764]) whoops, forgot to commit this in configure.in. really fixes #64

[aturner]

Note: due to bug #130 which I've added support for in my own testbed, the current make test will fail on everyone else's system because nobody else has my libpcap patch.

[aturner]

(In [1765]) fix various brokenness. refs #64

[aturner]

successful test run on my linux box. Won't work for anyone else (see #130) but oh well, i doubt anyone else uses it anyways :)

[aturner]

(In [1810]) initial checkin used my pcap_snaplen_override() which of course nobody else has. So until 0.9.6 is released (which should fix this issue), use my broken version. fixes #64 also refs #130