[Qt5-feedback] Moving itemmodels to QtCore

[Stephen Kelly]

Hi,

One of the things I indend to do with Qt 5 is to move the itemmodel classes 
which currently are in QtGui into QtCore. This is:

* QAbstractProxyModel
* QItemSelectionModel, QItemSelection, QItemSelectionRange
* QSortFilterProxyModel
* QIdentityProxyModel
* QStringListModel (#includes QAbstractItemView but apparently doesn't use 
it)

QFileSystemModel uses qicon qbrush etc which are in QtGui, so either the 
QtGui using stuff would be split out, or the QFileSystemModel goes wherever 
those classes go.

Any reason not to do this stuff? What do people think of what should happen 
to QFileSystemModel?

Thanks,

Steve.