[text] Fix GObject properties in ClutterText
[text] Fix GObject properties in ClutterText

Some of the read-write properties of ClutterText were missing
an implementation in clutter_text_get_property(), as well as
the :position and :selection-bound properties being wrongly
converted from fixed point to integer, passing through floating
point values.

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