[osg-submissions] AC3D loader resets optional path list

[Frederic Bouvier]

Hi,

I noticed the AC3D loader resets database path given as Options,
preventing users to put textures in another directory. This patch adds
the model path to the path list instead of replacing it.

file changed : src\osgPlugins\ac\ac3d.cpp

-- 
Frédéric Bouvier
http://my.fotolia.com/frfoto/   Photo gallery
http://fgsd.sourceforge.net/    FlightGear Scenery Designer

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