* tool/checksum.rb (Checksum#update?): check if the target exists too. git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@50438 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* ext/io/console/depend: check if VK table is modified by the checksum. git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@50434 b2dd03c8-39d4-4d8f-98ff-823fe69b080e