Use the correct 64bit integer sprintf formats on MinGW+msvcrt
Use the correct 64bit integer sprintf formats on MinGW+msvcrt

MinGW's gcc may link against the msvcrt in which case we need to use the %I64
format prefix.

Reported by Ari Jolma.

https://bugzilla.gnome.org/show_bug.cgi?id=585215

potyl/perl-Glib,potyl/perl-Glib,potyl/perl-Glib