Fixed AlphaMapFilter.clone()

Signed-off-by: Grant Skinner <info@gskinner.com>
Merge branch 'master' of github.com:CreateJS/EaselJS
Added BitmapText.

Signed-off-by: Grant Skinner <info@gskinner.com>
got rid of cache support for DisplayObject.clone()

Signed-off-by: Grant Skinner <info@gskinner.com>