common.mk: update unicode files every times
common.mk (update-unicode): remove -e option to force update every builds.
tool/downloader.rb (Downloader.download): return if ims is nil and target file is existing.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@48056 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
common.mk: update unicode files every times
common.mk (update-unicode): remove -e option to force update
every builds.
tool/downloader.rb (Downloader.download): return if ims is nil
and target file is existing.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@48056 b2dd03c8-39d4-4d8f-98ff-823fe69b080e