Add libpng include path

 Forward compatibility change

Change-Id: Iae792715d9a9aea34f53cd6383981371835c4a31
SurfaceFlinger: Dont show Animation on External Display

- With this change the animation effect will not be shown on
  external display.
- It will change from portrait to landscape in one shot.
- Primary would still continue the animation effect
- set property sys.disable_ext_animation to disable animation

Change-Id: Ibd94bf166f08eeab1d504afe69230f7c6a617eb6
CRs-fixed: 453747
surfaceflinger: don't handle EVENT_ORIENTATION when !HWC_DEVICE_API_VERSION_1_0

a184463 causes segfault on boot for the enrc2b (and probably others), this fixes it.

Change-Id: Ic4a7a05b44c8cc44a0d25c56def4acdf5b0939df