Added a wrapper for Ultra commands (python script utilizing PyParsing).
Added spatial extents to CurveMetaData. Added operator names to Plot state object. Added two new curve expressions: CurveDomain (modifies the domain of a curve) and Curve, a macro wrapping curve expressions on y values (normal exprssions) and x values (CurveDomain expression). Updated configuration to test for existence of PyParsing, needed for the wrapper. Added to the launcher and dist scripts to ensure the wrapper could be found and installed correctly. git-svn-id: http://visit.ilight.com/svn/visit/trunk/src@6979 18c085ea-50e0-402c-830e-de6fd14e8384