fixed prototype to match _invalid_parameter_handler

see http://msdn.microsoft.com/en-us/library/a9yf33zb.aspx

added tutorial-prep-stmts.lua to the license-checks

merged 2012 copyright-year fixes

next is 0.8.2

stabilize the failover test

  * use kill(..., SIGKILL) to kill the backend right away instead of using _set_shutdown()
  * renamed COMMIT SUICIDE to KILL BACKEND
  * let the KILL BACKEND fail with 'connection went away ...' as the synchronization point

remove all the version suffixes. Let the user figure it out, we can't

updated NEWS for the 0.7.1 release