An investigation on NECTAR-50 revealed that the dead lock prevention made in 02fbfd9e and c5269550 are causing slow down by having too many threads go through scouting, which in turn calls into classloader (which is synchronized.) Reduce the overhead by reusing sezpoz index so that classloading overhead is minimal.

[HUDSON-8493] MavenReporter#postExecute parameter Throwable error is always empty in case of mojo failure

* federated-login-service:
  show a message indicating why they are seeing the login screen
  extend from RuntimeException to simplify tunneling
  Oops
  honor UserPropertyDescriptor.isEnabled()
  relaxing this a bit
  report the user that was signed in.
  Added the registration screen for newly identified user.
  unclaimed identity should commence a signup sequence
  tweaking abstraction
  needs a title
  Added an extension point for external federated login service.
  still a work in progress. Federated login support