actor: Reword the allocation cycle warning
actor: Reword the allocation cycle warning

Since we're allowing allocation cycles saying that calling
queue_relayout() inside an allocation cycle "is not allowed" is kind of
confusing. We should say that "it is not recommended".

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