* Reimplemented BDiskDevice::IsModified()/

{Prepare,Commit,Cancel}Modifications() using the userland add-on
  backend. IsModified() and CommitModifications() are little more than
  stubs ATM.
* Made BPartition::VisitEachChild()/VisitEachDescendant() const.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@22602 a95241bf-73f2-0310-859d-f6bbb57e9c96

headers/private/storage/Partition.h

@@ -76,9 +76,10 @@ public:
 			status_t			GetPartitioningInfo(
 									BPartitioningInfo* info) const;
 	
-			BPartition*			VisitEachChild(BDiskDeviceVisitor* visitor);
+			BPartition*			VisitEachChild(BDiskDeviceVisitor* visitor)
+									const;
 	virtual BPartition*			VisitEachDescendant(
-									BDiskDeviceVisitor* visitor);
+									BDiskDeviceVisitor* visitor) const;
 
 	// Self Modification
 
@@ -205,6 +206,11 @@ private:
 			bool				_SupportsChildOperation(const BPartition* child,
 									uint32 flag) const;
 
+			status_t			_CreateDelegates();
+			status_t			_InitDelegates();
+			void				_DeleteDelegates();
+			bool				_IsModified() const;
+
 			friend class BDiskDevice;
 			friend class BDiskSystem;
 			friend class BMutablePartition;