Merge in extapi post mixin

lib/msf/core/post/windows/extapi.rb

@@ -0,0 +1,25 @@
+# -*- coding: binary -*-
+
+module Msf
+class Post
+module Windows
+
+module ExtAPI
+
+  def load_extapi
+    if session.extapi
+      return true
+    else
+      begin
+        return session.core.use("extapi")
+      rescue Errno::ENOENT
+        print_error("Unable to load Extended API.")
+        return false
+      end
+    end
+  end
+
+end # ExtAPI
+end # Windows
+end # Post
+end # Msf