Minor updates

Bugfix: OracleSqlParser - table reference parenthesis encapsulation +
tests
Valid examples:
SELECT * FROM ((SELECT * FROM DUAL)) D
SELECT * FROM ((DUAL)) D
SELECT * FROM ((((DUAL)) D))
SELECT * FROM ((DUAL D))
SELECT * FROM ((DUAL AS OF TIMESTAMP SYSDATE D))
SELECT * FROM ((DUAL AS OF TIMESTAMP SYSDATE)) D

Added: OracleStatementSemanticModel - resolving column references when
asterisk is used