Fix projector falloff and attenuation handling.

...app_settings/shaders/class1/deferred/multiSpotLightF.glsl

...iew/app_settings/shaders/class1/deferred/pointLightF.glsl

...view/app_settings/shaders/class1/deferred/spotLightF.glsl

...app_settings/shaders/class2/deferred/multiSpotLightF.glsl

...view/app_settings/shaders/class2/deferred/spotLightF.glsl

...app_settings/shaders/class3/deferred/multiSpotLightF.glsl

...view/app_settings/shaders/class3/deferred/spotLightF.glsl