Can't compile 0.5.3.3 for 4.6.1, see error message:

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xkb-config.c: In function 'xkb_config_initialize_xkb_options':
xkb-config.c:153: error: too few arguments to function 'xkl_config_registry_load'
xkb-config.c: In function 'xkb_config_get_xkl_registry':
xkb-config.c:550: error: too few arguments to function 'xkl_config_registry_load'
make[2]: *** [xfce4_xkb_plugin-xkb-config.o] Error 1
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