strutil: specify the global namespace for strtof and strtod calls. (#2391)
strutil: specify the global namespace for strtof and strtod calls. (#2391)

thus avoids infinite loop.
lgritz/oiio,OpenImageIO/oiio,lgritz/oiio,lgritz/oiio,OpenImageIO/oiio,OpenImageIO/oiio,OpenImageIO/oiio,lgritz/oiio