[Bf-python] Image loading in GL memory

[joeedh]

>>> Hi- I was writing an image thumbnailer and found there is no way an 
>>> image into blender OpenGL memory.
>>>
>>> I propose adding a image.glLoad() function which would return  the 
>>> bindCode or None if there is not enough vram.
>>
I used the Python Imaging Library (PIL) myself to achive this.  It's 
kindof slow, but it works.

Joseph.