for VoIP Call Analysis:

for VoIP Call Analysis:
- make VoIP Call Analysis work if, called from command line
- should also work now while capturing with packet list
  updated in "real time" (to be tested)
- give each tap listener a unique identifier, so ethereal
  won't mix them up
- various cleanups
- compile by default

Todo:
- add support for "tap display filter"
- reimplement function to add rtp streams to the call flow.

git-svn-id: http://anonsvn.wireshark.org/wireshark/trunk@13232 f5534014-38df-0310-8fa8-9805f1628bb7