mxcl/homebrew — pull request #10513 by jacknagel (2012-02-27 01:33:36+00:00)
Title: keg: allow selective linking at the file level

Some parts of a keg's tree are not subject to the cleaner, and sometimes
we still want to remove things in directories marked skip_clean; this
allows us that freedom.

If 'lib' is marked skip_clean, we still want to avoid linking the
charset.alias file into the top of the tree. The same needs to be done
for the locale.alias file in share/locale.