SpriteFrame: rectInPixels is calculated correctly

Bug introduced in v2.1-rc0.
Fixes issue #1461

Stackable actions behavior can be disabled at compile time
StableActions: enabled by default

CatmullRomAction: non-stackable works as expected
Update cocos2d/CCTexture2D.m

only log about using RGB565 if actually using RGB565
BezierTo action: copy works as expected
Updates CHANGELOG
LayerTest works again... ouch
Version is v2.1rc0a
Adds BaseTestLayer in js-tests
Using new JSB file naming convention
Updates cocos2d version
Includes opengl_js files.

Added in the new JSB version
Using new JSB
"js" folder in jsb is a blue folder.

And the "js" folder is added into the search path
New JS tests
Using new JSB.

Improved enums
New JS tests and JSB
Adds opengl tests in tests xcode project
New JS Tests
Xcode project includes Opengl_manual file