Make compilable under JDK 7's javac (thus also removing an error mark in NetBeans' editor).

src/core/lombok/core/LombokNode.java:260: gatherAndRemoveChildren(Map<N,L>) has private access in LombokNode
		for (L child : children) child.gatherAndRemoveChildren(map);
		                              ^
  where N,L,A are type-variables:
    N extends Object declared in class LombokNode
    L extends LombokNode<A,L,N> declared in class LombokNode
    A extends AST<A,L,N> declared in class LombokNode

src/core/lombok/core/LombokNode.java

@@ -289,9 +289,9 @@ public abstract class LombokNode<A extends AST<A, L, N>, L extends LombokNode<A,
 		ast.replaceNewWithExistingOld(oldNodes, newNode);
 	}
 	
-	@SuppressWarnings("unchecked")
+	@SuppressWarnings({"unchecked", "rawtypes"})
 	private void gatherAndRemoveChildren(Map<N, L> map) {
-		for (L child : children) child.gatherAndRemoveChildren(map);
+		for (LombokNode child : children) child.gatherAndRemoveChildren(map);
 		ast.identityDetector.remove(get());
 		map.put(get(), (L) this);
 		children.clear();