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/windlight/cloudsF.glsl

@@ -11,9 +11,9 @@
 // The fragment shader for the sky
 /////////////////////////////////////////////////////////////////////////
 
-varying vec4 vary_CloudColorSun;
-varying vec4 vary_CloudColorAmbient;
-varying float vary_CloudDensity;
+VARYING vec4 vary_CloudColorSun;
+VARYING vec4 vary_CloudColorAmbient;
+VARYING float vary_CloudDensity;
 
 uniform sampler2D cloud_noise_texture;
 uniform vec4 cloud_pos_density1;