I disagree. The main advantage of the bug tracker is that you can query bugs even when they are already gone, so that you know whether a bug is in the current version, or not. If we would include all bugs of the current development code, this archive would be really clobbered with probably very simple and temporary stuff ("You forgot to commit that file..."). Furthermore, people would not use the bug tracker for many things as it is significantly more overhead to enter something to the bug tracker than writing a quick email.
I vote to use the bug tracker for the release code and the mailing list for bugs in the development code. Alternatively, we could think to start using the github bug tracker. That is much more convenient and may be an alternative.