Reapply r57093,r57094,r57097 "dtrace build fixes on FreeBSD"
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@57104 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Reapply r57093,r57094,r57097 "dtrace build fixes on FreeBSD"
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@57104 b2dd03c8-39d4-4d8f-98ff-823fe69b080e