Microplanning changes

* added subgraph matching for sentence-form (for rules like All, Which, To-do that include the whole SVO EvaluationLink within another link)
* handling utterance types that can switch between types (like interrogative)
* sentence forms for interrogatives
* preliminary "possession" pronouns handling
* hack to allow "interrogative" utterance type to map to both "TruthQuerySpeechAct" and "InterrogativeSpeechAct" in the future (commented out for now)
couldn't comment on unchanged line so suggested changes for this file.

typo on (load-scm-from-file ....)
and update to (microplanning test-sal ...)