* lib/date.rb (Date::Infinity#<=>): didn't work.  A patch from
	  Dirkjan Bussink <d.bussink AT gmail.com> [ruby-core:15098].
	  This is a bug obviously.  However it didn't affect the library's
	  functions.
	* lib/date.rb, lib/date/format.rb: some trivial changes.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_8_6@21222 b2dd03c8-39d4-4d8f-98ff-823fe69b080e