Back out changes causing broken shadows and other render shenanigans.

indra/llrender/llshadermgr.cpp

...wview/app_settings/shaders/class1/avatar/avatarSkinV.glsl

...wview/app_settings/shaders/class1/avatar/objectSkinV.glsl

.../newview/app_settings/shaders/class1/deferred/alphaF.glsl

.../newview/app_settings/shaders/class1/deferred/alphaV.glsl

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

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

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

...pp_settings/shaders/class1/deferred/multiPointLightF.glsl

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

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

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

...newview/app_settings/shaders/class1/deferred/postgiF.glsl

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

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

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

indra/newview/app_settings/shaders/class1/deferred/srgb.glsl

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

.../newview/app_settings/shaders/class1/deferred/waterF.glsl

.../app_settings/shaders/class1/windlight/atmosphericsF.glsl