Merge adjustments:
- Removed some stale str_split() references from docs
- Renumbered TypeTag enum comments
- Simplified test-case for @unload (don't need .bro files anymore)
* origin/topic/timw/deprecation-cleanup:
Doc updates
Fix language.init-in-anon-function btest due to changes to log filter predicates
Remove deprecated log filter predicates for 4.1
Remove Plugin::HookCallFunction and fix tests related to it
Remove support for .bro script extension and BRO_ environment variables
Remove deprecated ICMP events
Remove some deprected methods/events from bif files
Remove TYPE_COUNTER
Remove all of the random single-file deprecations
Remove all fully-deprecated files
Update bifcl submodule to remove deprecations from generated code
This also installs symlinks from "zeek" and "bro-config" to a wrapper
script that prints a deprecation warning.
The btests pass, but this is still WIP. broctl renaming is still
missing.
#239