[0.11] gst-plugins-gl: search and replace compatability with 1.0

[Matthew Waters]

Hi all,

I have completed the search and replace part of porting gst-plugins-gl 
to the 1.0 API.
It is available here:
https://github.com/ystreet/gstreamer-plugins-gl

The next step is actually getting the memory/buffer management working 
which I have done some preliminary work on.  From what I can gather from 
the design docs this is my understanding of what the new framework in 
plugins-gl should look like.

GstGLMemory - aka texture id. (also there's glBuffer* stuff in gl that 
might be useful although it's only available in GL >= 1.5)
GstGLMeta - carries the information about the texture such as 
framebuffer it is/isn't attached to, the gl context, width, height, 
color conversion mode, shaders, etc.
GstGLBufferPool - essentially manages the creation and deletion of 
textures and setting the GstGLMeta on each buffer.

Thoughts?