Mesa license issue?

[Callum Lerwick]

Okay, so there's a Second Life bug open pointing out what appears to be
a license problem with some OpenGL headers:

http://jira.secondlife.com/browse/VWR-2881

There is indeed a bunch of headers with "SGI Free Software License B"
boilerplate in them:

$ grep -l "SGI Free" /usr/include/GL/*
/usr/include/GL/glext.h
/usr/include/GL/glu.h
/usr/include/GL/glxext.h
/usr/include/GL/glxmd.h
/usr/include/GL/glxproto.h
/usr/include/GL/glxtokens.h

$ grep -l "SGI Free" /usr/include/GL/* |xargs rpm -qf|sort|uniq
mesa-libGL-devel-6.5.2-13.fc7.i386
mesa-libGL-devel-6.5.2-13.fc7.x86_64
mesa-libGLU-devel-6.5.2-13.fc7.i386
mesa-libGLU-devel-6.5.2-13.fc7.x86_64
xorg-x11-proto-devel-7.2-9.fc7.x86_64

The devel packages say they're all MIT license:

$ grep -l "SGI Free" /usr/include/GL/* |xargs rpm -qfi|grep License|
sort|uniq
Size        : 1393741                          License: MIT
Size        : 82501                            License: MIT
Size        : 872295                           License: MIT

"SGI Free Software License B" is explicitly not acceptable in Fedora:

http://fedoraproject.org/wiki/Licensing#head-d8cc605dd386091c8b6be97b8a43fb6a5d624ae1

I've googled up and down and I haven't found an explanation as to what
is going on. Mesa's merge review is untouched:

http://bugzilla.redhat.com/show_bug.cgi?id=226136

Is there a reason these files don't fall under the SGI license? There's
a provision for "an alternative license" but I'm not even going to
pretend to understand the mechanics. If so, could the headers be
clarified, and an explanation made in Mesa's review? And a reply made
here? And Mesa's home page fixed? ;P

http://www.mesa3d.org/license.html

GLEW apparently had the same problem, fixed by taking headers from Mesa,
so I'm very confused as to what is going on:

http://bugzilla.redhat.com/show_bug.cgi?id=251191


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