obrien d2744b88e9 Add ability to search up the directory hierarchy for the system directory.
Do by specifying ".../" with '-m' or MAKESYSPATH (new) environment variable.

Reviewed by:	<sjg@NetBSD.org>
Obtained from:	NetBSD (+ embellishment by me, sent back to NetBSD)
2010-01-04 18:57:22 +00:00
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