Well, as my time permits it and Berin could give a hand as well, why not.
But first we need to come to a consensus about which build infrastructure we would support to use:
1) Ant in this case we can use the current build system and tune it to the needs we have for the 2.2 and maybe add some ruper task to get rid of jars in our repository (suggested by Nicola Ken IIRC) and some more for modularisation ease
IMO Ant is inflexible in general and adding flexibility (e.g. by using parameterized antcall) slows down the build process.
2) Centipede in this case I could not volunteer as I'm out of Centipede since their move from Cents to Antlibs (we still have some customer project using a Cents based version of it but they will never move to Antlibs)
Can not evaluate it.
3) Maven ATM this is my preferred build infrastructure and I could help building the 2.2 repo based on it
Heard interesting things it (besides the opinion that there is nearly no documentation ;-) ), so +1 from here too. Jelly/Maven seem to bring the necessary flexibility into Ant.
Joerg