[PLUG] env variable for include path

[Christopher N. Deckard]

What's the env variable for adding to your include path.  Libs is
LD_LIBRARY_PATH and that works all fine and dandy, but I need to get
header files to be found too.

-Chris

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    Christopher N. Deckard      |          Web Technician
        cnd@purdue.edu          |    Engineering Computer Network
     http://triad.dhs.org       |   http://www.ecn.purdue.edu/ECN
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