Add a compat req and fix railgun mixin references

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

@@ -13,7 +13,7 @@ module WMIC
   def initialize(info = {})
     super(update_info(
       info,
-      'Compat' => { 'Meterpreter' => { 'Commands' => %w{ stdapi_railgun_api* stdapi_sys_process_* } } }
+      'Compat' => { 'Meterpreter' => { 'Commands' => %w{ extapi_clipboard_[gs]et_data stdapi_railgun_api* stdapi_sys_process_* } } }
     ))
 
     register_options([

test/modules/post/test/railgun.rb

@@ -8,7 +8,6 @@ class MetasploitModule < Msf::Post
   include Msf::ModuleTest::PostTest
   include Msf::Post::File
   include Msf::Post::Windows::FileInfo
-  include Msf::Post::Windows::Railgun
 
   def initialize(info={})
     super( update_info( info,

test/modules/post/test/railgun_reverse_lookups.rb

@@ -13,7 +13,6 @@ require 'module_test'
 class MetasploitModule < Msf::Post
 
   include Msf::ModuleTest::PostTest
-  include Msf::Post::Windows::Railgun
 
   def initialize(info={})
     super( update_info( info,
@@ -34,6 +33,22 @@ class MetasploitModule < Msf::Post
 
   end
 
+  #
+  # Return an array of windows constants names matching +winconst+
+  #
+  def select_const_names(winconst, filter_regex=nil)
+    session.railgun.constant_manager.select_const_names(winconst, filter_regex)
+  end
+
+  #
+  # Returns an array of windows error code names for a given windows error code matching +err_code+
+  #
+  def lookup_error (err_code, filter_regex=nil)
+    select_const_names(err_code, /^ERROR_/).select do |name|
+      name =~ filter_regex
+    end
+  end
+
   def test_static
 
     it "should return a constant name given a const and a filter" do