Jython 2.7.2b3

Today I am building Jython 2.7.2b3 for release, hoping it will be the 
last beta in its version, but we'll see. b2 flushed out some new 
defects, including the need to revisit the threading bug in type 
publication.

After this, Jython will begin to identify as v2.7.2b4-DEV. This moving 
on to the next version immediately seems to work, where the suffix means 
"in development", i.e. not yet. When we decide it's actually a release 
candidate, it is easy to change to v2.7.2rc1-DEV.

I have worked off the bugs tagged milestone 2.7.2, pulled a couple of 
GitHub PRs from Adam, and at least looked at other PRs there. (There's a 
simple PR I think acceptable but needs a CLA.) Anything else I'm missing?

_socket.py really needs some love, but it would be for 2.7.3.

Jeff

-- 
Jeff Allen