[test-text] Use g_setenv instead of setenv
[test-text] Use g_setenv instead of setenv

setenv doesn't appear to be available on Windows so it fails to
compile.

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