To gain a high level of quality and to ensure bugs will not turn up again in 
future releases, we'll use the following procedure when fixing bugs.

1. Create a testsuite scenario that will recognize the bug.
   This can be a new testsuite check (under checktree/bugs/issuezilla/<id>).
   Or you create an addition to an existing testsuite check. In this case, please
   create a file checktree/bugs/issuezilla/<id>.txt referencing the extended 
   testsuite check. Use checktree/bugs/issuezilla/template.txt as template.
2. Fix the bug.
3. Verify bug fix with testsuite.
4. Review. Use the review form doc/devel/review.txt, follow the steps listed in
   doc/devel/review_help.txt.
5. Merge the fix to other branches as necessary, repeat steps 3 (testsuite) 
   and 4 (review).

All testsuite development is done in maintrunk.
The maintrunk testsuite can test both 5.3 and 6.0 systems.