changes to work with OpenBSD
removed setting of umask to 077

on OpenBSD, this results in incorrect permissions for install packages
Don't set PKG_PATH on OpenBSD

cdist doesn't detect OpenBSD snapshot releases, and thus incorrectly
sets PKG_PATH. Should rely on /etc/pkg.conf instead.
added version support to type __package_pkg_openbsd
fixed pkg_version for __package_pkg_openbsd
fixed pkg_version for __package_pkg_openbsd again
added support for parabola, yaourt
Merge branch 'openbsd' into 2.1
Merge branch 'parabola' into 2.1