No subject

usual. The most important method is `UseFlags`, which takes an
(optional) program parameter, which can also be either a recipe
directory or a program name. It returns a frozenset of the enabled
flags. The return value is cached, so the method may be called
repeatedly with the same arguments without much penalty. Another
useful public method is `potentialFlags`, which takes *only* a recipe
directory and returns a frozenset of all the flags that could possibly
be enabled for that recipe. Freshen uses that to provide output on
which flags could be enabled, modeled after emerge, only without the
ugliness. The other methods should be treated as private.

Comments? Suggestions? Complaints? Get in quick for the last two.
-Michael