* ext/fcntl/fcntl.c: update document.  use "file descriptor" instead
  of "file handle" because it is not used other Ruby documents and
  it is confusing with Windows file handle.
  correct F_DUPFD behavior.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@38959 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* 2013-01-28

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@38960 b2dd03c8-39d4-4d8f-98ff-823fe69b080e