CYGWIN Installer should setup a root environment variable

[Chris Walters]

I have experienced many times situations which I would like to refer to 
CYGWIN's root directory from a bat script. The most generic solution 
would be to utilise an environment variable such as CYGROOT or (as in 
startxwin.bat) CYGWIN_ROOT to refer to the absolute windows pathname 
(e.g. D:\cygwin). This would free us from making assumptions if it was 
setup during the installation utility. The environment variable should 
be setup for system if installed for "All Users".

NT Question: How does cygwin update the System registry (for environment 
variables) if it is installed as a normal user? I can't modify it 
myself, so how does the installer do it?

-- 
Chris Walters
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|  ,-_|\   Chris Walters      <chris.walters@pobox.com> |
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