SH-1427 Fix for sunlight color getting clobbered for non-deferred atmospheric shaders.

indra/llrender/llshadermgr.cpp

@@ -974,7 +974,7 @@ void LLShaderMgr::initAttribsAndUniforms()
 	mReservedUniforms.push_back("cloude_noise_texture");
 	mReservedUniforms.push_back("fullbright");
 	mReservedUniforms.push_back("lightnorm");
-	mReservedUniforms.push_back("sunlight_color");
+	mReservedUniforms.push_back("sunlight_color_copy");
 	mReservedUniforms.push_back("ambient");
 	mReservedUniforms.push_back("blue_horizon");
 	mReservedUniforms.push_back("blue_density");

indra/newview/app_settings/shaders/class1/windlight/atmosphericsHelpersV.glsl

@@ -23,7 +23,7 @@
  * $/LicenseInfo$
  */
  
-uniform vec4 sunlight_color;
+uniform vec4 sunlight_color_copy;
 uniform vec4 light_ambient;
 
 vec3 atmosAmbient(vec3 light)
@@ -33,7 +33,7 @@ vec3 atmosAmbient(vec3 light)
 
 vec3 atmosAffectDirectionalLight(float lightIntensity)
 {
-	return sunlight_color.rgb * lightIntensity;
+	return sunlight_color_copy.rgb * lightIntensity;
 }
 
 vec3 atmosGetDiffuseSunlightColor()