Recording the earlier changes and the integration of the new
executable-war.

Jerome Lacoste reported that 5c91eb1f fixed JENKINS-7745. So marking it as closed.

Having a calendar with the first day of week being Monday (such as in the en_GB locale), setting DoW to Sunday moves the calendar forward whereas in cron it expects the calendar to go backward in time.

 Adjusting this logic.

This change might reveal additional information about why the connection is disrupted.

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.