replace ad hoc driver loading with a proper driver manager, new DDK, new PnP manager with device matching, asynchronous startup, resource ownership and removal, add shared PCI capability helpers, replace typed, rigid services with a proper service manager, implement proper system shutdown and restart, shutting down unloads drivers and shuts down services, add simple power button, remove heavyweight boot self-tests and SMP stress runs, add monotonic timestamps to kernel debug output, fruitless USB and PS/2 fixes, make test builds opt in.

code/kernel/ob_object.c

@@ -39,6 +39,7 @@ static uint32_t KiObjectPoolTag(OBJECT_TYPE type) {
     case ObjectTypeInputManager: return MM_POOL_TAG('i', 'm', 'g', 'r');
     case ObjectTypeDisplayManager: return MM_POOL_TAG('d', 'm', 'g', 'r');
     case ObjectTypePipeEndpoint: return MM_POOL_TAG('p', 'i', 'p', 'e');
+    case ObjectTypeServiceRegistration: return MM_POOL_TAG('s', 'r', 'e', 'g');
     default:                    return MM_POOL_TAG('o', 'b', 'j', ' ');
     }
 }