ENH: Simplify the cmake configuration of paraviews python components. There is...

ENH: Simplify the cmake configuration of paraviews python components. There is now a global enable/disable variable and only when that is set on are the individual controls for the embedded interpretter, server side filter and python/qt testing components activated. Default value of all is now OFF. Addresses bug#4320

CMakeLists.txt

 
 PROJECT(QtTesting)
 
-OPTION(QT_TESTING_WITH_PYTHON "Build Testing with Python" ON)
 SET(QT_TESTING_WITH_XML ON)
 
 IF(QT_TESTING_WITH_PYTHON)