transcode_data.h (rb_econv_result_t): change enumeration constant's prefix: transcode_ to econv_.
transcode.c: follow the constant prefix change.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@18624 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
transcode_data.h (rb_econv_result_t): change enumeration
constant's prefix: transcode_ to econv_.
transcode.c: follow the constant prefix change.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@18624 b2dd03c8-39d4-4d8f-98ff-823fe69b080e