0.24 release update - upcoming dates

Hi, everyone. 0.22 is out the door. We're running up against the
0.24 dates faster than you might imagine.

- 19 June, Alpha, end of major feature inclusion (one week away!)
- 3 July, Beta, branch for release

I propose that we stick to these dates without any adjustment. That
way the next cycle can be a normal one.

This will mean that the 0.24 cycle will consist primarily of bug fixes
and smaller enhancements rather than major new feature development, if
it hasn't already been included. I think that's fine. Trunk opens
for 0.26 development in just three weeks. Any major feature work can
wait to land until then.

We had discussed doing work to modularize Qpid during the 0.24 time
frame, but I think we've run out of time for that. In my opinion, It
should instead be targeted for 0.26.

Thanks!
Justin

0.24 release page: https://cwiki.apache.org/qpid/024-release.html