OpenImageIO/oiio — pull request #598 by lgritz (2013-05-14 06:06:55+00:00)
Title: Define 'USING_OIIO_PUGI' when using the OIIO-internal version of PugiXML

This is going to help OSL builds for people who built OIIO using the system version of PugiXML and told the OIIO build system not to use the bundled one.