- cleanup of wql Defiinitions.scala
- grouped WqlLiterals and WqlFuncs under WqlEvaluated class
- supporting functions with inner functions as arguments
- added support of complex parameters to pig foreach statement
- added suport of complex computations to wql select statements
- updated pig foreach and wql select tests
- adapting the changes in wql select and pig foreach statements
- added first test of select with complex expression
- added wqlfunc to pigudf conversion in wql2pig code