[Openal-devel] AL_EXT_source_distance_model revisit

[Chris Robinson]

Poking about this one, first.

http://kcat.strangesoft.net/openal-extensions/EXT_source_distance_model.txt

Seems to be the simplest to handle, as it just makes a given source's distance 
calculation use a source property value instead of the context property value. 
Any issues with it that I may have missed? If not, I can go ahead and finalize 
it.