[TODO] update TODO
[entropy.client.dep] rewrite simple or dependencies resolution

Selected matches was not respected by the simple or dependencies
resolution code. This commit addresses the problem and fixes the
virtual/glu dependendency handling.
[entropy.client] drop package.satisfied support, see bug #3879

It never worked as users expected and can lead to misinterpretation.
It will be reimplemented in future through something similar to package.provided
[entropy.client.package] add support for package.splitdebug.mask, see bug 3707