Use $(hdrdir) for include/ruby.h, as well as r67033
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@67051 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Added by nobu (Nobuyoshi Nakada) almost 7 years ago
Use $(hdrdir) for include/ruby.h, as well as r67033
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@67051 b2dd03c8-39d4-4d8f-98ff-823fe69b080e