Added several new functions that are used to prove HOL goals. Added new methods "vampireH" and "eproverH" that can prove both FOL and HOL goals. The old "vampire" and "eprover" methods are renamed to "vampireF" and "eproverF"; they can only prove FOL goals.

Added new functions to handle HOL goals and lemmas. Added a funtion to send types and sorts information to ATP: they are clauses written to a separate file. Removed several functions definitions, and combined them with those in other files.