Ruby

merge revision(s) 46243,46244: [Backport #9882] [Backport #9883]

    * string.c (rb_str_substr): need to reset code range for shared
      string too, not only copied string.
      [ruby-core:62842] [Bug #9882]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_0_0@46584 b2dd03c8-39d4-4d8f-98ff-823fe69b080e