compile.c: register cdhash
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@51816 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
compile.c: register cdhash
iseq constant body instead of compile time mark array, not to
get GCed. [ruby-core:70708] [Feature #8543]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@51816 b2dd03c8-39d4-4d8f-98ff-823fe69b080e