In the process, tighten up command line argument handling a bit, and
improve some error messages.
Also, make the "magic number" 0x2000 a bit more obvious.
--HG--
extra : convert_revision : svn%3Aeff31bef-be4a-0410-a8fe-e47997df2690/trunk%4082
way!). Next step is to analyse PCR against the pcap timestamps.
--HG--
extra : convert_revision : svn%3Aeff31bef-be4a-0410-a8fe-e47997df2690/trunk%4051