This is the result of (major * 10000 + minor * 100 + patch), for example
3.1.2 becomes 30102. This definition may be helpful for external code
that requires conditional compilation to support multiple Zeek
versions with differing APIs.
Plugins that were made using an older skeleton (e.g. from Bro 2.5.x)
may still reference "bro-config.h", "bro-path-dev", or "bro" from the
build tree, so we can simply provide compatibility symlinks/wrappers
for the new files that use "zeek" in their names.
Most of these changes are either cmake-related or plugin-related.
Added a new test "plugins/legacy.zeek" to test that legacy Bro plugins
still work.
Also added a symlink bro-path-dev.in because some legacy Bro packages
won't install without it.
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
