Silence Gdk warnings on systems with integrated png loader.
New gdjpixbuf package. The installation isn't broken, but it gets unhappy that a loader module file isn't present. This is harmless, but misleading/annoying.
2016/12/14 20:19:02 firefox: (firefox:3): GdkPixbuf-WARNING **: Cannot open pixbuf loader module file '/usr/lib/gdk-pixbuf-2.0/2.10.0/loaders.cache': No such file or directory
2016/12/14 20:19:02 firefox: This likely means that your installation is broken.
2016/12/14 20:19:02 firefox: Try running the command
2016/12/14 20:19:02 firefox: gdk-pixbuf-query-loaders > /usr/lib/gdk-pixbuf-2.0/2.10.0/loaders.cache
2016/12/14 20:19:02 firefox: to make things work again for the time being.