bug fix. 

issueid : #304

https://github.com/hangum/TadpoleForDBTools/issues/304
Support to Oracle Synonym.

issue id : #294
 
https://github.com/hangum/TadpoleForDBTools/issues/294
Merge pull request #305 from jeongjaehong/1.2.0

Orace synonym support & postgreSQL bug fix.