* fixed nasty bug in FairResourceLock.Wake - _waiterListHead was uninitialized so Wake tried to unblock the list head, thinking it was an exclusive waiter
* fixed bug in FairResourceLock.ReleaseShared - shouldn't wake anyone when not last shared owner
* added RIGOROUS_CHECKS to FairResourceLock
git-svn-id: svn://svn.code.sf.net/p/processhacker/code@2487 21ef857c-d57f-4fe0-8362-d861dc6d29cd