Merge branch 'mm/config-xdg'

Finishing touches to the XDG support (new feature for 1.7.12) and tests. * mm/config-xdg: t1306: check that XDG_CONFIG_HOME works ignore: make sure we have an xdg path before using it attr: make sure we have an xdg path before using it test-lib.sh: unset XDG_CONFIG_HOME