Added set_flags method to dns.resolver.Resolver to allow overriding of default query flags
Added set_flags method to dns.resolver.Resolver to allow overriding of default query flags

leeclemens/dnspython,cluck/dnspython,tomlanyon/dnspython,Abhayakara/dnspython,rcorrieri/dnspython,tow/dnspython,fjxhkj/dnspython,preo/dnspython