common.mk: update-man-date
common.mk (update-man-date): update last date in man pages.
tool/vcs.rb (VCS#modified): returns last modified time.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@50614 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Added by nobu (Nobuyoshi Nakada) about 10 years ago
common.mk: update-man-date
common.mk (update-man-date): update last date in man pages.
tool/vcs.rb (VCS#modified): returns last modified time.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@50614 b2dd03c8-39d4-4d8f-98ff-823fe69b080e