* lib/cgi/session.rb: Add overview documentation to CGI::Cookie
	* lib/cgi/html.rb:  Don't add CGI::TagMaker documentation to CGI.
	  Patch by David Copeland.  [Ruby 1.9 - Bug #4704]
	* lib/cgi/core.rb:  Clean up CGI documentation.  Patch by David
	  Copeland.  [Ruby 1.9 - Bug #4704]
	* lib/cgi/cookie.rb:  Clean up CGI::Cookie documentation.  Patch by
	  David Copeland.  [Ruby 1.9 - Bug #4704]


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@31595 b2dd03c8-39d4-4d8f-98ff-823fe69b080e