merge revision(s) 54129,54130,54132: [Backport #11844]
* enc/trans/JIS: update Unicode's notice. [Bug #11844]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_1@54283 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
merge revision(s) 54129,54130,54132: [Backport #11844]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_1@54283 b2dd03c8-39d4-4d8f-98ff-823fe69b080e