giotypefuncs.c: Sort _get_type functions in the 'C' locale

This ensures that the generated file is always the same (not dependent
on the build machine's environment), making the build reproducible.

Thanks to Jérémy Bobbio <lunar@debian.org> for the Debian bug report and
patch.

https://bugzilla.gnome.org/show_bug.cgi?id=763617
1 file changed