Compiler fixes for VS2010 & 2013
Compiler fixes for VS2010 & 2013

OpenImageIO/oiio,mcanthony/oiio,cwilling/oiio,sambler/oiio,lgritz/oiio,micler/oiio,micler/oiio,sambler/oiio,bdeluca/oiio,OpenImageIO/oiio,lgritz/oiio,sambler/oiio,micler/oiio,bdeluca/oiio,bdeluca/oiio,YangYangTL/oiio,lgritz/oiio,scott-wilson/oiio,scott-wilson/oiio,cwilling/oiio,micler/oiio,YangYangTL/oiio,YangYangTL/oiio,cwilling/oiio,OpenImageIO/oiio,cwilling/oiio,scott-wilson/oiio,bdeluca/oiio,mcanthony/oiio,mcanthony/oiio,scott-wilson/oiio,OpenImageIO/oiio,YangYangTL/oiio,lgritz/oiio,mcanthony/oiio,sambler/oiio