keysyms-update: Add deprecation notice for compat symbols
keysyms-update: Add deprecation notice for compat symbols

Now that we can warn about deprecated macros, we should finally do it
for the old, non-namespaced key symbol macros that we've been stringing
along since the 1.0 days.

GNOME/clutter,jigpu/clutter,GNOME/clutter,jigpu/clutter,GNOME/clutter,jigpu/clutter,jigpu/clutter,Distrotech/clutter,GNOME/clutter,Distrotech/clutter,GNOME/clutter,Distrotech/clutter,Distrotech/clutter,jigpu/clutter,Distrotech/clutter,jigpu/clutter,Distrotech/clutter