grafx - Extensible Java Graphics Package Code

Moving from java.util.Hashtable to java.util.HashMap.

Implemented Block.hashCode().

Starting to add hashCode() to Layer and to Block.

Adding hashCode() to Position and to HalfPosition.

Adding equals() methods.

Getting the computer player to run again after the massive changes to
BlockOrientation structure (in BlockGenerator) and with the introduction of the
16 bit "short" bit fields which specify the post-drop action.

Printing out info in main(), having to do with whether or not block has unique
mirror image.

Minor changes to BlockGenerator. Tested the main(). Works wonderfully.

Adding getLayers() to net.blockout.Block.

Getting this puppy to compile again.