TAJO-1220: Implement JDBC function for 'createStatement' and 'setEscapeP...

Hi guys!
- Statement createStatement(int resultSetType, int resultSetConcurrency)
   - Support 'CONCUR_READ_ONLY' only. 
   - Not support 'TYPE_SCROLL_SENSITIVE'.

- void setEscapeProcessing(boolean enable)
   - Tajo is not necessary the function. So do nothing.