Making delombok compatible with post-resolution transformers meant delombok would fail with a 'duplicate context value' error.

Fixes issue #178

Thanks to Neildo for using the 0.10.0 beta and spotting the problem - the tests don't run 1 delombok with multiple files. Maybe we should change that.

src/delombok/lombok/delombok/Delombok.java

@@ -366,6 +366,7 @@ public class Delombok {
 		
 		for (File fileToParse : filesToParse) {
 			Comments comments = new Comments();
+			context.put(Comments.class, (Comments) null);
 			context.put(Comments.class, comments);
 			
 			@SuppressWarnings("deprecation")