(ENCINDEX_UTF_8): renamed from ENCINDEX_UTF8.
(rb_enc_init): use ENC_REGISTER.
* include/ruby/oniguruma.h (OnigEncodingUTF8, ONIG_ENCODING_UTF8):
removed.
* enc/*.c: remove use of &encoding_*; use enc argument instead.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@15067 b2dd03c8-39d4-4d8f-98ff-823fe69b080e