glib-2.0: Move Unicode* and NormalizeMode enums under GLib
glib-2.0: Move Unicode* and NormalizeMode enums under GLib

Fixes bug 675082.

spidermonkdust/vala,rvu95/vala,playya/vala,rvu95/vala,severinh/vala,frida/vala,severinh/vala,GNOME/vala,jessevdk/vala,GNOME/vala,tjol/vala-tjol,tjol/vala-tjol,spidermonkdust/vala,GNOME/vala,Distrotech/vala,flobrosch/vala-fixes,Distrotech/vala,tjol/vala-tjol,frida/vala,xdave/pvala,rvu95/vala,frida/vala,jessevdk/vala,severinh/vala,playya/vala,flobrosch/vala-fixes,frida/vala,frida/vala,Distrotech/vala,spidermonkdust/vala,jessevdk/vala,GNOME/vala,flobrosch/vala-fixes,playya/vala