glib-mkenums: Use utf-8 for reading files
glib-mkenums: Use utf-8 for reading files

On Windows open() defaults to ANSI and on Python 2 it doesn't take
an encoding. Use io.open() instead which provides the same interface
on both Python versions.

https://bugzilla.gnome.org/show_bug.cgi?id=785113

endlessm/glib,johne53/MB3Glib,johne53/MB3Glib,johne53/MB3Glib,endlessm/glib,endlessm/glib,endlessm/glib,endlessm/glib,johne53/MB3Glib,johne53/MB3Glib,johne53/MB3Glib