Bug Fixes in KDE Base
Implement pasting of data with storedPut rather than moving a tempfile.
This fixes the wrong permissions on the created file, and will make it
possible to fix undo too (not done yet).
Had to deprecate methods that return a CopyJob pointer, but the main
method pasteClipboard is unchanged.
Old QT_NO_MIMECLIPBOARD code removed, unmaintainable and wrong.