OpenImageIO/oiio — pull request #927 by lgritz (2014-08-02 04:05:26+00:00)
Title: fmath.h: Move all the "using" outside the OIIO namespace.

If the 'using' is inside the namespace block, it's basically useless
to apps that include fmath. This mainly affects functions that fmath.h
supplies because they are missing from certain MSVS versions.