test-cogl-multitexture: Set linear filters on the two textures
test-cogl-multitexture: Set linear filters on the two textures

Otherwise it seems that rounding errors will cause the fragments at
the edge of the quad to blend with neighbouring quarters of the
texture which cause the test to fail.

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