Three small GUI patches

[Wolfgang Lux]

Hello,

here are three small patches for gui.

The first of these is an urgent fix for an issue in NSTableView.
In the -validateEditing code, the local variable newObjectValue
is uninitialized if the table view has no formatter.

NSTableView.patch
Description: Binary data

The second fix concerns NSPageLayoutPanel, which passes wrong
values to stopModalWithCode:. In particular, it is passing the
tags of the buttons, but should really invoke these methods
with NSOKButton and NSCancelButton, respectively.

NSPageLayout.patch
Description: Binary data

The final patch for NSDocument ensures that a document's update
count is changed only if the document's print info is actually
updated. At present, the change is always incremented after
displaying the page layout panel, regardless of whether the user
did change the layout or cancel the dialog.

NSDocument.patch
Description: Binary data

Wolfgang