revert r26305.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_8@26306 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
revert r26305.
accept any time format in maker. [ruby-core:26923]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_8@26306 b2dd03c8-39d4-4d8f-98ff-823fe69b080e