* lib/abbrev.rb: Add words parameter to Abbrev::abbrev
  Patch by Devin Weaver [Backport #7927]


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_0_0@39458 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* enum.c (Enumerable#chunk: Improved examples, grammar, and formatting
  Patch by Dan Bernier and Rich Bruchal of newhaven.rb
  [Backport #7926]


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_0_0@39459 b2dd03c8-39d4-4d8f-98ff-823fe69b080e