Rename "master" branch to "main" for glibc 2.35 release.

[DJ Delorie]

Adhemerval Zanella <adhemerval.zanella@linaro.org> writes:
> I must say that I am failing to see any technical advantage or improvement
> of doing this change.

There isn't any.  This is a response to a vocal group in the USA that
feels that words can't change, and "master/slave" will always mean
historic slavery and nothing else, and since their way is the only way,
the rest of the world has to change intead.

Obviously, I'm opposed to such things ;-)

The only example of "doing it right" I've seen so far, is that Fedora
changed their master branch to "rawhide" which actually makes a lot of
sense, since that's where that branch is used.

Note: I'm not opposed to renaming the master branch *per se*.  After
all, it's just a word.  I'm opposed to doing it *for those reasons* and
in a way which inconveniences our users.  Do it right, do it better, or
don't do it at all.