test_gc.rb: termsig
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@48974 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
test_gc.rb: termsig
termsig to ensure killed by SIGINT. and try SIGSEGV to dump
something.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@48974 b2dd03c8-39d4-4d8f-98ff-823fe69b080e