[ogl-sample] glext.h versions

["Hans Weber" <weberh@xxxxxxxxxx>]

I downloaded http://oss.sgi.com/projects/ogl-sample/ABI/glext.h,
thinking that it would be the most up-to-date version (version 7), but
when I downloaded GLsdk, I found that it had a glext.h labelled as
version 8.

Is there a central place I should be looking for the most up-to-date
glext.h?  I have been adding extensions on my own as they come along,
but I would prefer to use a standard version of the file.

thanks for any info,

Hans Weber
weberh@xxxxxxxxxx