Enabled post-processing features. Todo: Fix bloom

Fixed avatar shadows on AMD (and any other sane GLSL compiler)
Fixed windows compile:
 -curl version was updated after running develop.py. Not sure if applicable to linux/darwin
 -new llqtwebkit version on windows, since the old url is now invalid.

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

@@ -10,6 +10,7 @@ uniform sampler2D diffuseMap;
 
 void main() 
 {
-	gl_FragColor = vec4(1,1,1,gl_Color.a * texture2D(diffuseMap, gl_TexCoord[0].xy));
+	//gl_FragColor = vec4(1,1,1,gl_Color.a * texture2D(diffuseMap, gl_TexCoord[0].xy)); //This should not compile!
+	gl_FragColor = vec4(1,1,1,texture2D(diffuseMap, gl_TexCoord[0].xy).a * gl_Color.a);
 }