Make constants final

Constants should be marked as final. Here two constant values are used as enumerations of possible states, but are not declared final. This is bad practice, as it would allow the programmer to do stupid things like change the meaning of the current state, which could lead to errors.
Added the first cut of the DownloadApplication.
Added final.
Enable scrolling in Ping Pong activity

Adds a ScrollView to enable scrolling in the Ping Pong activity on Android.

This allows usage on lower resolution devices like the Nexus S. All text will be viewable as well as the reset button, albeit requiring that the user scrolls down to see whatever ends up off screen.
Some fixes.
Fixed misuse of SimpleAtomicLong.
Update PalantirManagerUnitTest.java

Change format of JUnit failure message and add Console output indicating test failed.
Merge pull request #25 from dfcoffin/master

Update PalantirManagerUnitTest.java
Merge pull request #24 from Sardtok/patch-3

Enable scrolling in Ping Pong activity
Merge pull request #23 from Sardtok/patch-2

Make constants final
Applied patches.
Fixed output.
Added week-4-assignment-3.
Cleaned up the description a bit.
Added src and test directories.
Improved the diagnostics.
Added Mike'slatest enhancements.
Fixed output.
Moved latch down and renamed it to mLatch.
clarified that we need an *array* of semaphores.