Fixes #675 No disabled feature should log spam or crash anymore.

Deprecates the old usage of the AEItemDefinitions via the direct method access of

* blocks()
* parts()
* items()
* materials()

and thus use the new re-direct via definitions().

All definitions are now initialized, no matter what. But SubItems, Items and Blocks are not registered, if by chance are disabled.

src/main/java/appeng/core/AELog.java

@@ -29,7 +29,7 @@ import appeng.util.Platform;
 public final class AELog
 {
 
-	public static final FMLRelaunchLog instance = FMLRelaunchLog.log;
+	public static final FMLRelaunchLog INSTANCE = FMLRelaunchLog.log;
 
 	private AELog() {
 	}