Also fixes a typo in a still unused method.

Also, it removes a bunch of code for non-thp packages.

It only installs thp packages that aren't already installed as they should
be.
It also outputs READY for bundles that have at least one package in them
that's installable under this restrictions.

Also add more controller oriented output

This changes the file modes, it seems OSX needs it this way.

Right now it's a bit more than just copying files, nothing else.

Recognizes bundles that have all thp packages and arranges them in a separated
dict from the installableDict. This bundles will be handled by the ThpInstaller
as a whole, so it can order installations by dependencies.

ThpDB's insert, delete and exists seems to work as expected by now.

But it's still not finished.

Adds two parameters to makethppackage: thpPath and scriptsDir.
thpPath: where to save the finished thp file.
scriptsDir: where the scripts specified in the configuration file are.

Creates its metadata based on a config file.
This still needs a sanity check.

Also, remove the (unused) thandy.formats.Key

The Client has learned a new option, --download-method, too specify
whether we're downloading directly or via BitTorrent.

This implementation has a few remaining issues, the biggest one is
that seeding isn't implemented at all (when the download stops,
Thandy stops sharing). Failure to download due to no available
peers also doesn't work.