MFC v1.117:

Plug a memory leak. Once any given package (e.g. perl) was installed
we would leak a saved screen for every other package we tried to install
that listed perl as one of its dependencies. When installing things
like gnome and kde that wound up being a LOT of leaked memory.

While here fix up some whitespace nits that show up as differences
from the other branches.

Approved by: re (bmah)