Various tweaks to the plugin skeleton.
Extending btest.cfg to use Bro's canonifier, and allow access to Bro's
traces.
Adding/editing some meta files.
Adding a basic configure script to plugin skeleton.
Merge remote-tracking branch 'origin/topic/robin/reader-writer-plugins'

* origin/topic/robin/reader-writer-plugins:
  Adding a basic configure script to plugin skeleton.
  Adding/editing some meta files.
  Extending btest.cfg to use Bro's canonifier, and allow access to Bro's traces.
  Various tweaks to the plugin skeleton.