GET commands for SPJ and UDF

Fix for bug #1322691
These 7 GET statements are now supported.
get procedures [in schema <schema-name>];
get libraries [in schema <schema-name>];
get functions [in schema <schema-name>];
get table_mapping functions [in schema <schema-name>];
get procedures for library <library-name>;
get functions for library <library-name>;
get table_mapping for library <library-name>;

A fix for a problem reported by Anoop where GET TABLES IN SCHEMA <hive-schema-name> did not work is also fixed. The issue was that the schema name was not getting passed through when the internal statement was used to retrieve tables ina  hive schema.

Change-Id: I4649a0432ed766504a95cb6da34b0c01881fc1c3
Merge "GET commands for SPJ and UDF"