Python transition to 2.4 in hoary for desktop and main finished

[Matthias Klose]

With today's uploads, python2.4 is the default python interpreter for
hoary's base and desktop packages, the transition for packages in main
will follow soon.

When upgrading a package (besides adding the stuff building new
python2.4-foo packages), some build dependencies need to be tightened:

debhelper (>= 4.2.28)		- adding python2.4 support
cdbs (>= 0.4.25-1ubuntu1) - adding python2.4 support
python (>= 2.4)		  - needed for the ${python:Depends} to correctly work.

These and other notes for upgrading/building packages can be found in
the (not yet uploaded) python2.4 package.

Happy python2.4 testing

	Matthias