This existing API seems doomed performance-wise, and writing
things in Ruby is nicer anyways. So discourage folks from
using it.
[Feature #11339]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@52925 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Deprecated the old DATA_XXX.
Reviewed by ko1 and nobu.
Fixes [ruby-dev:40881] #3064
* doc/extension.rdoc: ditto.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@50318 b2dd03c8-39d4-4d8f-98ff-823fe69b080e