fix a bit of gcc4 build

git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@22578 a95241bf-73f2-0310-859d-f6bbb57e9c96

headers/os/storage/Directory.h

@@ -10,6 +10,7 @@
 #include <EntryList.h>
 #include <StorageDefs.h>
 
+class BFile;
 class BSymLink;
 
 

headers/os/storage/File.h

@@ -10,6 +10,9 @@
 #include <Node.h>
 
 
+class BEntry;
+
+
 class BFile : public BNode, public BPositionIO {
 	public:
 		BFile();

headers/os/storage/Node.h

@@ -9,6 +9,7 @@
 #include <Statable.h>
 
 class BDirectory;
+class BEntry;
 class BString;
 struct entry_ref;