[Mesa-dev] remove mfeatures.h, take two

[Brian Paul]

I've respun my remove-mfeatures branch as remove-mfeatures-2.  It's in 
my repo on freedesktop.org

This removes the mfeatures.h file and the last of the #ifdef FEATURE_x 
code from core Mesa.

Note, however, that the scons/makefiles still define FEATURE_GL, 
FEATURE_ES1, FEATURE_ES2, etc. because that controls whether some 
source files are built and in some places (like egl-static/egl_st.c) 
we need to test those symbols to avoid calling non-existant functions.

If a few people can test, that'd be great.

-Brian