well, not really - qt_parts.prf will still create one, but it will be
empty.
apart from being cleaner, this now finally makes it possible to load an
unconfigured qt source tree into qtcreator without random parts of the
tree being missing from the project explorer.
Change-Id: Ida7ee77ecb450af05bfa66106caf2067b02f1a7f
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Reviewed-by: Joerg Bornemann <joerg.bornemann@digia.com>
ae95f28997