That's gadfly done, mostly. Things left:

That's gadfly done, mostly. Things left:
- Class.filter (I'm a wuss ;)
- schema changes adding new non-multilink properties are not implemented.
  gadfly doesn't have an ALTER TABLE command, making that quite difficult :)

I had to mangle two unit tests to get this all working:
- gadfly also can't handle two handles open on the one database, so
  testIDGeneration doesn't try that.
- testNewProperty is disabled as per the second comment above.

I noticed test_pack was incorrect, and the *dbm tests fail there now.
Looking into it...

git-svn-id: http://svn.roundup-tracker.org/svnroot/roundup/trunk@989 57a73879-2fb5-44c3-a270-3262357dd7e2