* dir.c (dir_s_glob):  [DOC] Improve wording and layout.

* dir.c (file_s_fnmatch):  ditto.

* dir.c (Init_Dir):  [DOC] Document File::Constants::FNM_XXX
  constants.  (These won't show up in RDoc until a new RDoc is
  imported.)



git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@42940 b2dd03c8-39d4-4d8f-98ff-823fe69b080e