time.c: [DOC] Time#localtime
time.c: [DOC] Time#localtime

* time.c: state that Time#localtime does nothing when nothing
  changes.  [ruby-core:87675] [Bug #14880]

git-svn-id: ab86ecd26fe50a6a239cacb71380e346f71cee7d@63823 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ruby/rubyspec,eregon/rubyspec,nobu/rubyspec,ruby/rubyspec,nobu/rubyspec,eregon/rubyspec,nobu/rubyspec,ruby/spec,eregon/rubyspec,ruby/spec,ruby/spec