Rename classifier spec

No need for that very verbose naming scheme anymore.
Rename spec for post --rspec-dm2
Correct use of optparse API

So much inline signalling within DSL values here...
I need to write a better one - Some time in the future when OSS pays my
bills :D
Slightly refactor CLI

* Backlists should "work" now.
* CLI (match expression) classifiers are not used as matchers anymore