SH-2244 Fix for shaders not compiling on pre-GL-3.0 ATI drivers

indra/llrender/llshadermgr.cpp

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

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

...pp_settings/shaders/class1/deferred/alphaNonIndexedF.glsl

...ings/shaders/class1/deferred/alphaNonIndexedNoColorF.glsl

...p_settings/shaders/class1/deferred/attachmentShadowF.glsl

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

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

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

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

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

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

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

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

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

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

..._settings/shaders/class1/deferred/postDeferredNoDoFF.glsl

...ngs/shaders/class1/deferred/postDeferredNoDoFNoFXAAF.glsl

...settings/shaders/class1/deferred/postDeferredNoFXAAF.glsl

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