Fix with-dbus-service-dir configure switch
Fix with-dbus-service-dir configure switch

Got broken by the commit 9936956378f295a12b05b5194af2397be2a9c94f
halfline/gvfs,philipl/gvfs,philipl/gvfs,philipl/gvfs,cpatulea/gvfs,gicmo/gvfs,gicmo/gvfs,gicmo/gvfs,cpatulea/gvfs,gicmo/gvfs,xkahn/gvfs-cmis,xkahn/gvfs-cmis,xkahn/gvfs-cmis,halfline/gvfs,halfline/gvfs,xkahn/gvfs-cmis