Small cleanup of draw script
Renamed addAccess to fulfill
Removed volatile, and some changes to the concurrency code.
Changed taskqueue interface
Changed task interface
Execute tasks runs until it finds a task or steal fails. No longer stop on tasks that need to wait more. Also added more instrumentation points.
New task queue with boolean priorities and pinned (nonstealable) tasks
New test on logging
First step moving from lock to semaphore on handles