x11: Add debug notes for pointer-emulated
x11: Add debug notes for pointer-emulated

Distrotech/clutter,Distrotech/clutter,GNOME/clutter,GNOME/clutter,ebassi/clutter,ebassi/clutter,collects/clutter,djdeath/clutter,GNOME/clutter,jigpu/clutter,heysion/clutter-clone,djdeath/clutter-android,heysion/clutter-clone,jigpu/clutter,collects/clutter,collects/clutter,djdeath/clutter,Distrotech/clutter,GNOME/clutter,djdeath/clutter,Distrotech/clutter,djdeath/clutter-android,jigpu/clutter,jigpu/clutter,djdeath/clutter-android,collects/clutter,djdeath/clutter,heysion/clutter-clone,djdeath/clutter,collects/clutter,ebassi/clutter,GNOME/clutter,Distrotech/clutter,jigpu/clutter,djdeath/clutter-android,heysion/clutter-clone,djdeath/clutter,djdeath/clutter-android,jigpu/clutter,ebassi/clutter,ebassi/clutter,Distrotech/clutter,heysion/clutter-clone