ruby.c: fix macros
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@56400 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
ruby.c: fix macros
config.status variables, not available in config.h.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@56400 b2dd03c8-39d4-4d8f-98ff-823fe69b080e