Added -l option to search RAYPATH library locations for material file
Added example of tiled texture
Renamed rview, lam, calc, and neat to rvu, rlam, icalc, and neaten
Typo correction -- oconv was where obj2mesh should have been!
Fixed RCSid specification
Added -a option to obj2mesh to incorporate materials in mesh
Returned old behavior with flat surfaces and improved documentation
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