* enc/encdb.c, enc/utf_16_32.h (ENC_DUMMY_UNICODE): endian-less wide UTF encodings are dummy but Unicode. * encoding.c (rb_encdb_set_unicode): set Unicode flag. * template/encdb.h.tmpl: allow ENC_DUMMY variants. git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@37101 b2dd03c8-39d4-4d8f-98ff-823fe69b080e