make_encmake.rb: mandatory dbs
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@50953 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
make_encmake.rb: mandatory dbs
encdb and transdb are always mandatory.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@50953 b2dd03c8-39d4-4d8f-98ff-823fe69b080e