Update to GCC copyright assignment policy

[Bradley M. Kuhn]

As most of you are probably aware, glibc is also discussing whether or not
to remove the copyright assignment mandate to the FSF.  I have posted a
comment there regarding that, now available at:
   https://sourceware.org/pipermail/libc-alpha/2021-June/128303.html
… which is supplemented by a longer essay that I published here:
   https://sfconservancy.org/blog/2021/jun/30/who-should-own-foss-copyrights/

I believe there are many complex issues related to the issue of where
copyrights for Free Software projects like GCC go, and while I've written
quite a lot of detail there, I think some of what I've written may be useful
as GCC considers how to build long-term robust plans to assure that the
copyleft of GCC is upheld for the long-term.
-- 
Bradley M. Kuhn - he/him
Policy Fellow & Hacker-in-Residence at Software Freedom Conservancy
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