Fix issue 7: using future features of LinkedList
Fix issue #10: DIRECTORY_PICTURES on Eclair

http://code.google.com/p/markers-for-android/issues/detail?id=10
Initial tiling render implementation.
Texture support in TiledBitmapCanvas.
Checkpoint: versioned tiles
Versions working with multi-undo. (!)
Loading drawings works again.
Mollify lint tools; pick a better (more stable) overflow menu animation.
v1.1-beta
Fixing too-many-undo's in tiles.

Here's something astonishing: off-by-one-errors are such a
common programming error that occasionally you make so many
of them that they cancel one another out and the behavior is
essentially correct. Only when you go back to fix or add
something that depends on the intended behavior do you
notice the problem, and then it becomes something of a
pest-control problem to fix all the errors.
Long-standing gripe: tools don't retain state if process exits
Performance: use software layers for HUDs at all times

We were benefiting from this before due to some sloppy coding that
left the layers on after the first HUD animation.
1.1 release candidate
v1.1.1: Fix crashing bug pre-Honeycomb.