Metacat

Created new printExtendedSQL function that can get the extended
return fields using only xml_nodes and not xml_index. One
step closer to eliminating the dependence ofn xml_index.

Created test class QuerySpecificationTest and started process of removing the xml_index from the QuerySpecification code. Reformatted some classes for readability.

Remove UPPER function for >, < operator.

Add a new search mode not-contains.

New class will be used in metacat ecogrid impl.