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fogal1 authored
Ensure that we can access the X server, and fail explicitly if we can't. Also, use the hostname for the xhost call, instead of allowing the entire world to access the X servers. git-svn-id: http://visit.ilight.com/svn/visit/trunk/src@14769 18c085ea-50e0-402c-830e-de6fd14e8384
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