TEIID-2974, TEIID-2972: fixing the bug in Excel metadata properties definition, also DDL generation to include the SET namespace declaration for the built-in type namespaces and allow re definition of the builtin type with same prefix or some other prefix
Merge pull request #245 from rareddy/TEIID-2974

TEIID-2974, TEIID-2972: fixing the bug in Excel metadata properties defi...