[text] Maintain the cursor at the end when deleting
[text] Maintain the cursor at the end when deleting

If the cursor is already at the end of the Text contents then we
need to maintain its position when deleting the previous character
using the relative key binding.

djdeath/clutter-android,dlespiau/clutter,tardyp/clutter,jigpu/clutter,kerrickstaley/clutter-vala,kerrickstaley/clutter-vala,GNOME/clutter,spatulasnout/clutter,rkudiyarov/clutter_osx,jigpu/clutter,djdeath/clutter-multithreaded,djdeath/clutter-multithreaded,spatulasnout/clutter,collects/clutter,rkudiyarov/clutter_osx,dlespiau/clutter,collects/clutter,djdeath/clutter,jigpu/clutter,ebassi/clutter,rkudiyarov/clutter_osx,spatulasnout/clutter,GNOME/clutter,Distrotech/clutter,jigpu/clutter,jigpu/clutter,nobled/clutter,nobled/clutter,jigpu/clutter,spatulasnout/clutter,djdeath/clutter-android,djdeath/clutter,heysion/clutter-clone,djdeath/clutter,nobled/clutter,djdeath/clutter-android,Distrotech/clutter,ebassi/clutter,djdeath/clutter-android,collects/clutter,Distrotech/clutter,djdeath/clutter,GNOME/clutter,Distrotech/clutter,tardyp/clutter,heysion/clutter-clone,djdeath/clutter-multithreaded,heysion/clutter-clone,GNOME/clutter,kerrickstaley/clutter-vala,collects/clutter,ebassi/clutter,dlespiau/clutter,spatulasnout/clutter,heysion/clutter-clone,djdeath/clutter,djdeath/clutter-multithreaded,rkudiyarov/clutter_osx,collects/clutter,djdeath/clutter,tardyp/clutter,Distrotech/clutter,GNOME/clutter,djdeath/clutter-android,ebassi/clutter,kerrickstaley/clutter-vala,Distrotech/clutter,heysion/clutter-clone,ebassi/clutter