Added privilegeSpawnedThreads config parameter, mostly to detach caller's AccessControlContext from Threads that provoke the init, to prevent references from c3p0 Threads to app server (esp tomcat) ClassLoaders that ought to be garbage-collectable on hot undeploy. Might also be useful for helping c3p0 run from less trusted code, although that has not come up yet. Thanks to Claudio D'angelo for calling attention to the issue.
CHANGELOG and doc updates.