Backport majority of shader fixes from develop

...w/app_settings/shaders/class1/deferred/avatarShadowF.glsl

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

...ew/app_settings/shaders/class1/deferred/deferredUtil.glsl

...wview/app_settings/shaders/class1/deferred/pbralphaV.glsl

...settings/shaders/class1/deferred/screenSpaceReflUtil.glsl

...pp_settings/shaders/class1/deferred/shadowAlphaMaskF.glsl

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

...ew/app_settings/shaders/class1/deferred/textureUtilV.glsl

...ewview/app_settings/shaders/class1/environment/srgbF.glsl

.../newview/app_settings/shaders/class1/interface/copyF.glsl

..._settings/shaders/class1/windlight/atmosphericsFuncs.glsl

...wview/app_settings/shaders/class2/deferred/pbralphaF.glsl

...a/newview/app_settings/shaders/class3/deferred/hazeF.glsl

...wview/app_settings/shaders/class3/deferred/materialF.glsl

...pp_settings/shaders/class3/deferred/multiPointLightF.glsl

...iew/app_settings/shaders/class3/deferred/pointLightF.glsl

...ew/app_settings/shaders/class3/deferred/softenLightF.glsl

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

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

.../app_settings/shaders/class3/environment/underWaterF.glsl