Call the Vector Informatik BLF format "Vector Informatik Binary Logging
Format (BLF) logfile", to give more details to people who don't
necessarily know what "BLF" means (British Lung Foundation?).
Note that in the introductory comments to blf.c and blf.h as well.
Note that we should perhaps report unknown flags/packet timestamp type
values as errors or warnings.
Note that we can, and should, report at least some 802.11 radio
information to our caller.
This patch adds the format 2 and 3 of the ObjectHeader, so that the blf
code does not stop reading the file, when one of these header formats is
present.
Minor refactoring was necessary.
Guy Harris