* lib/rubygems:  Update to RubyGems master baa965b.  Notable changes:

  Copy directories to lib/ when installing extensions.  This completes
  the fix for [ruby-trunk - Bug #9106]

* test/rubygems:  ditto.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@43953 b2dd03c8-39d4-4d8f-98ff-823fe69b080e