spec_helper.rb: pass jobserver fds
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@59475 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
spec_helper.rb: pass jobserver fds
pass jobserver fds explicitly, because other specs might have
set close_on_exec flags on these fds.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@59475 b2dd03c8-39d4-4d8f-98ff-823fe69b080e