Description of problem:
 In a sql query for transformation in a view model, If user writes "ESCAPE '\u0000'" and save it, it will saved as "ESCAPE '�'" and can not open the view model anymore with parse exception.

 The reason why user wants to set "ESCAPE '\u0000' is a workaround for this jira ticket, TEIIDDES-2217.

Version-Release number of selected component (if applicable):
- JBDS 8.1.0
- Teiid Designer 9.0.1.Final-v20150211-1407-B643


Steps to Reproduce:
1. Create a new Teiid Project
2. Create a source/view model which uses csv file
3. Open a transformation editor, and fix the query like this:

 before:
===
SELECT
 A.a, A.b, A.c
FROM
 (EXEC SourceModel.getTextFiles('sample.csv')) AS f, TEXTTABLE(f.file COLUMNS a string, b string, c string HEADER) AS A
===

 after:
===
SELECT
 A.a, A.b, A.c
FROM
 (EXEC SourceModel.getTextFiles('sample.csv')) AS f, TEXTTABLE(f.file COLUMNS a string, b string, c string ESCAPE '\u0000' HEADER) AS A
===

4. save the projects and shutdown JBDS
5. Reboot JBDS and open the view model

Actual results:
Can not open the view model

Expected results:
User can open the view model, and the fixed sql is still there.

Additional information: 
Whenever this issue occurs, user needs to modify the xmi file by hand and it reduce the performance a lot. So please let me know the workaround if exists.

Thx