* lib/rake.rb, lib/rake/*, test/rake/*: Update latest rake master(e47d023)

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@47433 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* append newline at EOF.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@47434 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* properties.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@47435 b2dd03c8-39d4-4d8f-98ff-823fe69b080e