This patch simplify MASTER_SITES in each Xfce ports. Users can only override the default component (xfce), possible values are:
- apps
- art
- bindings
- thunar-plugins
- panel-plugins
- archive
'xfce' contains core components. Test is needed, for ports where ${PORTNAME} differ from official name.
I'm seeing build failures at cleandir stage. I guess LINKER_TYPE isn't being defined at that point. So ${LINKER_TYPE} would need to be wrapped in quotes, or for LINKER_TYPE to be defined at all stages.