Removed attributes &postprocessor and &match from documentation
and source code. Removed undocumented attribute &attr from
source code. Removed internal attribute (&tracked) from documentation.
The return value of the call is an implicit boolean value of T if all
hook handlers ran, or F if one hook handler exited as a result of a
break statement and potentially prevented other handlers from running.
Scripts don't need to declare hooks with an explicit return type of bool
(internally, that's assumed), and any values given to (optional) return
statements in handler definitions are just ignored.
Addresses #918.
Add missing description of interval "msec" unit.
Improved description of pattern by clarifying the issue of operand
order and difference between exact and embedded matching.
Value assigned in bro_init() to a table with &create_expire
weren't expiring when reading traffic from an interface. It worked
when reading a pcap file, but I added a test case to show it still
working.
