Evas GL: Add pixmap surface fallback for gles 1.x indirect rendering

Evas GL: Add pixmap surface fallback for gles 1.x indirect rendering

Merge from upstream patch
https://phab.enlightenment.org/rEFLa14492ef73c9267042c5bf505080d0e90af394de

Automatically fallback to indirect rendering on FBO or X11 Pixmap
if the Evas Object Image is not marked as dirty. This should
improve the performance and/or power consumption in those
rare cases where this area of the canvas needs to be redrawn
but the GL content has not changed.

and

- when dirty set is not called but has direct rendering,
   evas gl should render to a fallback surface and use that as texture
 - for gles 1.x, this fallback surface should be a pixmap surface,
   so it uses EVAS_NATIVE_SURFACE_X11 type
 - from now, both EVAS_NATIVE_SURFACE_OPENGL and EVAS_NATIVE_SURFACE_X11
   can be passed for direct rendering

Change-Id: I8aefb55c2b42dc90d4440bfaaa59f3824828b1cd