/etc/profile: avoid multiple /usr/bin in PATH

[Achim Gratz]

Helmut Karlowski writes:
> I set C:/cygwin/usr/bin in my windows-environment. Now /etc/profile
> always adds /usr/bin to PATH resulting in /usr/bin being twice in my
> cygwin-PATH.
>
> The attached patch fixes this.

I tend to reject this patch.  The purpose of the default profile is to
put those two paths in front, while with your patch they could end up
anywhere.  If you think that's OK for you, then you can already do that,
but I don't think that's a good default.

> It also sets SHELL if not yet set and avoids a call of hostname.

Can you tell me in which circumstances this happens and why this is a
problem?  SHELL is supposed to be the user preference, so I don't think
/etc/profile should try to second-guess it.

The second fork to hostname can indeed be removed.


Regards,
Achim.
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