I am using gnu emacs november 2005, 22.0.50.1
for mac
I tried C-h b and got a whole list of bindings! nothing about
capitalization there.
I found the apple C binding for capitalization in this list
http://otn.oracle.com/jdeveloper/help/__inl.inline.true/__inl.topic.ide_rkeymapemacs_html/__inl.html
apple C seemed the most likely culprit
and apple C does behave to capitalize words and it does turn GLUT into
Glut
I can bind apple C to nothing, but if I restart emacs, the new binding
is forgotten.
So I don't have a permanent fix for now