CONFIGURE_ENV/MODULES/USE_LIBTOOL already defined in xfce4.port.mk, now that
all ports in this directory use x11/xfce4 module.
Bump all PKGNAMEs.
ok ajacoutot@ on a previous diff
Bump PKGNAMEs, regen PLISTs with @bin, fix licence markers, tidy up
LIB_DEPENDS/WANTLIB around, and while here remove an unneeded patch in
xfce4-xkb. The only remaining plugin to fix/update is xfce4-wavelan.
ok ajacoutot@.