Removed the setUIHandler methods

Found that the android.os.Handler object was being imported but was not
used anywhere to do anything. So removed the references to the same from
all places.
Removed variables from OpenGLView

There were 2 variables _x and _y declared in the class as private but
were used only in one function where there were set and then passed to
the renderer. Could not see how they contributed to the class, so
removed them and refactored the code to work without them.
Cosmetic changes to OpenGLRenderer
Cosmetic Changes

Have only added a few logging statments and changed another few
intentations, no major refactoring yet.
Refactored out the OpenGLRenderer class

Since the GLSurfaceView.Renderer is an interface and functionallity-vise
is very similar to a view (albit a bit more specific), I found it easier
to remove an extra layer of object-calling/message-passing
(whatever-it-was) to be... not necessery. Hence, merged the OpenGLView
and OpenGLRenderer classes and refactored (I have come to love that
term) the OpenGLRenderer class completely.