* Source/NSTableColumn.m (-initWithCoder:): Make columns
non-editable by default.
* Source/NSTableView.m (-editColumn:...select:): Make editing
here independ of the datasource.
* Source/NSTableView.m: Split -_isCellEditableColumn:row: in two
methods and ignore the cell isEditable state in -mouseDown:.



git-svn-id: svn+ssh://svn.gna.org/svn/gnustep/libs/gui/trunk@36307 72102866-910b-0410-8b05-ffd578937521