Back out changes causing broken shadows and other render shenanigans.

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

...ew/app_settings/shaders/class2/deferred/softenLightF.glsl

...ew/app_settings/shaders/class2/deferred/softenLightV.glsl

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

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

...w/app_settings/shaders/class2/deferred/sunLightSSAOF.glsl

...newview/app_settings/shaders/class3/deferred/cloudsF.glsl

...newview/app_settings/shaders/class3/deferred/cloudsV.glsl

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

indra/newview/app_settings/shaders/class3/deferred/skyF.glsl

indra/newview/app_settings/shaders/class3/deferred/skyV.glsl

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

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

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

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

...w/app_settings/shaders/class3/deferred/sunLightSSAOF.glsl

indra/newview/llviewershadermgr.cpp

indra/newview/pipeline.cpp