[krbdev.mit.edu #5605] NIM: BUG: APP: Advanced View update problem on Vista

[asanka@mit.edu via RT]

Patch generated against SVN trunk.

The behavior of the HDN_ENDTRACK notification has changed slightly on
Vista.  HDM_GETITEMRECT, when used while handling HDN_ENDTRACK, returns
the item extents that were there prior to the user starting the resizing
operation.  Earlier it would return the extents that resulted from the
resizing operation.