Fix runtest.py copy when OIIO is a submodule (#2380)
Fix runtest.py copy when OIIO is a submodule (#2380)


OpenImageIO/oiio,lgritz/oiio,lgritz/oiio,lgritz/oiio,OpenImageIO/oiio,OpenImageIO/oiio,OpenImageIO/oiio,lgritz/oiio