ZP-231 #comment throw a StatusException when WaitForChanges() is terminated due to another process so we can split between 'no notification' and 'obsolete process' #time 2h

git-svn-id: https://z-push.org/svn/z-push/trunk@1492 b7dd7b3b-3a3c-0410-9da9-bee62a6cc5b5