Remove explicit ref to jar file, just rename lib to libs

This way ADT will handle the dependencies.
Remove unused.
Remove hard-coded orientation which prevents rotation! Adjust other...

Adjust other parameters for newer versions of Android.
API 14.
Totally revise and reformat, eliminate tons of cruft...

Don't convert the raw data to String, but to List<double[]>; would
leave it as plain double[][] but that doesn't pass correctly as
Serializable (it should, but doesn't work). Toss out all the string
conversion stuff. Remove an unused repaint() method.