Description of problem:
debug configurations do not default to non-stop mode

Version-Release number of selected component (if applicable):
1:7.0.1-5.fc15

How reproducible:
Always

Steps to Reproduce:
1. Create a C/C++ launch configuration
2. On the Debugger tab, note that non-stop mode is not checked
  
Actual results:
gdb in Fedora is recent enough to handle non-stop mode by default so we should enable this by default.

Additional info:
From Marc Khouzam on cdt-dev:  in org.eclipse.cdt.dsf.gdb change IGDBLaunchConfigurationConstants.DEBUGGER_NON_STOP_DEFAULT = false to be true

Remember that F15 has branched at this point so if you want this in F15 final you'll need an update in Bodhi.