Allow to enable/disable memory checks even on release mode through the flag, return error for invalid addresses on SvcMap*Memory svcs, do not return error on SvcQueryMemory (instead, return reserved for the end of the address space), other minor tweaks

Ryujinx/Ui/Program.cs

@@ -10,6 +10,8 @@ namespace Ryujinx
     {
         static void Main(string[] args)
         {
+            AOptimizations.DisableMemoryChecks = true;
+
             Config.Read();
 
             Console.Title = "Ryujinx Console";