rtcheck: add go-ed functions to the list of CFG roots
rtcheck: add go-ed functions to the list of CFG roots

This adds a list of CFG roots (rather than the one hard-coded entry to
newobject) and extends it when encountering a go statement. Currently
the initial list is still just newobject.

aclements/go-misc,aclements/go-misc,aclements/go-misc,aclements/go-misc,aclements/go-misc