Ruby

• misc/ruby-mode.el (ruby-imenu-create-index-in-block): Fix the
  regexp to only pick definition lines properly. module_funtion' is not a definition of a module named _function'.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_8@18506 b2dd03c8-39d4-4d8f-98ff-823fe69b080e