CAPEDWARF-78 The current request's id should be exposed through an ApiProxy.Environment attribute
Add fire-n-forget for dist exec.
Reduce ApiProxy hacks
Limit transformer exposure.
Dev login should remember last email used to login
Fix logging cluster test.
CAPEDWARF-79 User.userId and User.authDomain are not set
Re-try pool usage.
Do we block on tasks.
[CAPEDWARF-83]; Fix async tx handling.
Optimize tx task tracking a bit.
Upgrade Ispn
CAPEDWARF-80 Honor <threadsafe> tag in appengine-web.xml
Add backends config support.
Support max concurrent requests config.
Apply backend to url fetch.
Simplify future wrap.
Fix async.
Match backend as regexp.
Initial aspect support