Several changes:

    - Make inputmasked line-edits preserve spaces in initial text, and add flag to preserve spaces when blurred
    - Added WLineEdit::displayText()
    - fix still one more problem with tableview scrollbar inteference
    - Patch for Thales (Erlandsen) to work around a bug in centos 5.4 http://bugs.centos.org/view.php?id=4187