[GRASS-dev] etc file finder, take 2

[William Kyngesburye]

(ooh, my brain hurts after this - not made for C)

Here's what I came up with.  It uses an env var, GRASS_ADDON_ETC,  
much like the PATH and GRASS_ADDON_PATH vars - a colon-delimited list  
of paths to look in.  And finally checks the GRASS application etc/.

It returns the full path to the found file or folder, or null if not  
found.

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And a companion g.findetc for use in scripts:

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Comments welcome.  As before, I'm not much of a C programmer, so  
there is probably something wrong - maybe memory cleanup needed or  
very inefficient.  At least it tested OK.

-----
William Kyngesburye <kyngchaos*at*kyngchaos*dot*com>
http://www.kyngchaos.com/

"This is a question about the past, is it? ... How can I tell that  
the past isn't a fiction designed to account for the discrepancy  
between my immediate physical sensations and my state of mind?"

- The Ruler of the Universe