Adding changes entry for the recent pkgConfig addition.
Adding changes entry for the recent pkgConfig addition.

ruschelp/cortex-vfx,ruschelp/cortex-vfx,code-google-com/cortex-vfx,code-google-com/cortex-vfx,ruschelp/cortex-vfx,code-google-com/cortex-vfx,code-google-com/cortex-vfx