Added Mike'slatest enhancements.
Fixed output.
Moved latch down and renamed it to mLatch.
clarified that we need an *array* of semaphores.
Yet more fixes.
Clarified that using an array of SimpleSemaphores is optional.
Changed mooca to mocca.
Fixed problem with WeakReference.
Renamed the package.
Fixed a typo.
Zapped the WeakReference.
Added Grading Driver.
Updated project name.
Updated Assessment-Description.txt.
Updated comments.
Fixed WeakReference issues.
Updated Assignment-Description.txt.
Yet more fixes for DownloadHandler.
Added new check for a Runtime exception.
Fixed mFailed.