Add checks for RAYPATH. Fixes #525 #537
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LGTM. |
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This pull request checks to make sure that RAYPATH is at least set with the current directory ('.'). If it's completely blank, it will error out with an informative message to check your RADIANCE installation, since those executables are probably not on the PATH. If it's a partial install with just the executables, then it will silently add the current directory ('.') to RAYPATH when RadianceObj is first initialized