Introduces five new macros:
* declare_platformlib_qt_logging_category
* install_platformlib_qt_logging_categories
and
* declare_plugin_qt_logging_category
* declare_app_qt_logging_category
* install_app_plugin_qt_logging_categories
which move any repeated patterns into the macros, and result in automatic
binding via the macro names to the generation of the kdebugsettings file.
These macros are applied for all places with qt logging categories (libs, plugins, app).