ruby.c: --debug=frozen-string-literal option
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@52698 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
ruby.c: --debug=frozen-string-literal option
from --enable to --debug. [Feature #11725]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@52698 b2dd03c8-39d4-4d8f-98ff-823fe69b080e