Description of problem:
Debugging of Drools project doesn't stop at breakpoints and runs without stopping to the end.


Version-Release number of selected component (if applicable):
- JBoss Developer Studio Drools plugin:
  - JBoss Drools Core    5.2.1.Final
  - JBoss Drools Guvnor  5.2.1.Final
  - JBoss Drools Task    5.2.1.Final

- BRMS runtime         5.3.0.BRMS.ER1

- Eclipse              3.7.1


How reproducible:
- debug Drools project

Steps to Reproduce:
1. create new Drools runtime and set it as default
2. create new Drools Project with default Drools runtime and add all sample codes
3. open src/main/rules/Sample.drl and add breakpoint to 9th line
4. right click on src/main/java/DroolsTest.java and execute Debug as Drools application

  
Actual results:
- application is running to the end without stopping at breakpoint


Expected results:
- execution should stop at the breakpoint


Additional info:
- debugging is working properly with BRMS runtime 5.2.1.Final