Merge pull request #15 from fzzzy/master

Respect the Graphics$clipped flag
Add CHManagerImpl class and the classes it depends upon
Merge pull request #16 from marco-c/add_CHManagerImpl_class

Add CHManagerImpl class and the classes it depends upon
use numeric ids as field names
stop using $ notation for fields
merge
eliminate .staticFields and store static field values directly in field
don't translate clipping rect
fixes to gfx
fix a few things for the simple game demo