rails/rails — pull request #8350 by claudiob (2012-11-28 18:23:31+00:00)
Title: Revert "rails gem has no lib directory to require"

This reverts commit 6bcbd6046f82c5f0114249a6b725f9679a140b9a.

The default value for require_paths is ['lib'], and Rails does not
need to include any lib/ file to build the gem, so the previous
commit 'makes sense'. However, gems will not be built at all if
require_paths is empty (see https://gist.github.com/1065473), so
it's better to stick with the default, which does not have any
side-effects