config: Don't read a config file at startup when using --disable-glib
config: Don't read a config file at startup when using --disable-glib

GKeyFile is a bit too much to import in a standalone build for my taste
as it depends on the encoding part of glib.

Reviewed-by: Robert Bragg <robert@linux.intel.com>

(cherry picked from commit 9af04f0d8813b7f6f7117e1cc2a38ae2b8d04cdd)

Distrotech/cogl,Distrotech/cogl,Distrotech/cogl,Distrotech/cogl