func (p *Package) Var(name string) (g *Global) {
	g, _ = p.Members[name].(*Global)
	return
}
func (p *Package) Var(name string) (g *Global) {
	g, _ = p.Members[name].(*Global)
	return
}
// Var returns the package-level variable of the specified name,
// or nil if not found.
//