Lazy shader update. attribute -> ATTRIBUTE, varying -> VARYING. Moved some shader preprocessor stuff from llviewershadermgr.cpp to llshadermgr.cpp to match LL (although it looks more messy)

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

@@ -36,9 +36,9 @@ uniform float sun_wash;
 uniform int proj_shadow_idx;
 uniform float shadow_fade;
 
-varying vec4 vary_light;
+VARYING vec4 vary_light;
 
-varying vec4 vary_fragcoord;
+VARYING vec4 vary_fragcoord;
 uniform vec2 screen_res;
 
 uniform mat4 inv_proj;