Fix ordering of BGPs that contain kTreePaths and AlgebraExtends.
Fix ordering of solution modifiers with respect to projection in SPARQL parser.
Improved error reporting in SPARQL parser.
Comment out debugging output in GTWSimpleQueryEngine.
Remove pointer argument in GTWTree initLeafWithType:value:pointer:.
Fixed error that was preventing aggregate values to be used in select expressions.
Updated SPARQL parser to more accurately recognize invalid projection/grouping combinations.
Improved error message on improper cli qparse invocation.