Move resolv under the vendor directory

lib/rubygems/net-http/lib/net/http.rb

@@ -22,7 +22,7 @@
 
 require_relative '../../../net-protocol/lib/net/protocol'
 require_relative '../../../vendor/uri/lib/uri'
-require_relative '../../../resolv/lib/resolv'
+require_relative '../../../vendor/resolv/lib/resolv'
 autoload :OpenSSL, 'openssl'
 
 module Gem::Net   #:nodoc:

lib/rubygems/tsort.rb

@@ -1,3 +1,3 @@
 # frozen_string_literal: true
 
-require_relative "tsort/lib/tsort"
+require_relative "vendor/tsort/lib/tsort"

lib/rubygems/vendor/resolv/lib/resolv.rb

@@ -1,7 +1,7 @@
 # frozen_string_literal: true
 
 require 'socket'
-require_relative '../../timeout/lib/timeout'
+require_relative '../../../timeout/lib/timeout'
 require 'io/wait'
 
 begin