* Avoid encoding the current stable suite in propellor's code,
since that poses a difficult transition around the release,
and can easily be wrong if an older version of propellor is used.
Instead, the os property for a stable system includes the suite name
to use, eg Stable "wheezy".
* stdSourcesList uses the stable suite name, to avoid unwanted
immediate upgrades to the next stable release.
This is to work around OSX's brain-damange regarding filename case
insensitivity.
Avoided moving config.hs, because it's a config file. Put in a symlink to
make build work.
Félix Sipma
Joey Hess