FrameBufferHA3: Improved version of FrameBufferHA2

[bailuk]

Add FrameBufferHA3 and make it default:
HA3 fixes an issue of HA2: FrameBufferHA2 sometimes prevents the LayerManager thread from terminating and then does not free its resources.

Changes:

• Reorganize class hierarchy of FrameBuffer classes.
• All FrameBuffer classes are now a subclass of abstract FrameBuffer
• Remove obsolete FrameBufferHA
• FrameBufferOld (original MapsForge FrameBuffer) and FrameBufferH2 are unchanged and can still be used as a fallback
• Add improved FrameBufferHA3 and make it default. Can be configured by changing FrameBufferController.FRAME_BUFFER_HA3

[devemux86]

Thanks for the clean work and the separate commits.
(makes easier the review)

Merged via 2679747 (with the option in Parameters class).