Make Baker's Group code compile! Thanks Shyotl~

Note: Large groups still don't load?!
SimConsole cap is needed for Sim Console, won't work without it, keeping it in!
..But it should work with the new ASync one? Maybe needs tweaks, first?

Also switches opening IMs to the gCacheName->getFullName(id, name) system mentioned earlier, my connection has improved!
And makes the Avatar Picker show display names! Yay! (Rearranged the includes there, alphabetical~)
Also fallback to gCacheName->getFullName(id, name) if getting name fails in the new system.. hopefully this will combat occasional big failures.. but it may not work anyway.. maybe my connection is just awful again

indra/llmessage/llavatarnamecache.cpp

@@ -679,6 +679,8 @@ bool LLAvatarNameCache::getPNSName(const LLUUID& agent_id, std::string& name)
 		}
 		return true;
 	}
+	if (gCacheName->getFullName(agent_id, name)) //We've failed, try to get the legacy name anyway
+		return false; //Legacy name is still a failure, it's not a PNSName, afterall.
 	return false;
 }