TEIIDDES-1561 Exception on attempt to launch Builders. modified visitor impls to handle null languageObj instead of attempting to get delegate
Merge pull request #79 from mdrillin/TEIIDDES-1561

TEIIDDES-1561
TEIIDDES-1562 support for virtual procedures as UDFs
Added invocationClass and invocationMethod properties to relationa.mxd
Changed RelationalModelExtensionAssistant to recoginize these properties
TEIIDDES-1563 Added New Child > Index... wizard
Included new index creation with new Table... wizard