Matthew Woehlke authored May 11, 2018 and Brad King committed May 15, 2018

Suppress AUTOMOC and AUTOUIC on files generated by Qt4 wrapping macros;
particularly, those generated by `qt4_wrap_cpp`, `qt4_wrap_ui`, and
`qt4_add_resources`.  None of these should need AUTOMOC or AUTOUIC
treatment, and CMP0071 makes it important to mark this explicitly.