R2l

On the following changes 
- LogicProcessor.java is edited and Scopevariable.java and varscope.txt are added to Relex  in order to  handle “maybe rule” which is  explained at http://wiki.opencog.org/w/RelEx2Logic_Rules#Maybe_Rule
- Different rule patterns are appended to relax-semantic-alg.txt in order to handle Adjective clauses
- Test sentences are added to TestRelex.java