fix failing test reported in rt#88616

Fix failing test reported in rt#88616 by Alex Hartmaier. According to
the lastest XDG Base Directory Specification
(http://standards.freedesktop.org/basedir-spec/basedir-spec-latest.html),
$ENV{XDG_CONFIG_DIRS} might contain colon separated list of directories
to be searched for configuration files.
bump version to 0.006