Change Mom to SlotMachine

rather large commit, but essentially a simple rename
Rationale in docs and blogs

test/vool/class_send/test_class_instance.rb

@@ -2,7 +2,7 @@ require_relative "helper"
 
 module Vool
   class TestClassInstance < MiniTest::Test
-    include Mom
+    include SlotMachine
     include VoolCompile
 
     def class_main
@@ -19,10 +19,10 @@ module Vool
     end
 
     def setup
-      ret = RubyX::RubyXCompiler.new(RubyX.default_test_options).ruby_to_mom(class_main)
+      ret = RubyX::RubyXCompiler.new(RubyX.default_test_options).ruby_to_slot(class_main)
       @compiler = ret.compilers.find_compiler_name(:some_inst)
       @main = ret.compilers.find_compiler_name(:main)
-      @ins = @compiler.mom_instructions.next
+      @ins = @compiler.slot_instructions.next
     end
     def test_class_inst
       space_class = Parfait.object_space.get_class
@@ -31,7 +31,7 @@ module Vool
       assert names.index_of(:inst) , names
     end
     def test_compiler
-      assert_equal Mom::MethodCompiler, @compiler.class
+      assert_equal SlotMachine::MethodCompiler, @compiler.class
       assert_equal Parfait::Type, @compiler.callable.self_type.class
       assert_equal 6, @compiler.callable.self_type.names.index_of(:inst) , @compiler.callable.self_type.names
     end
@@ -40,10 +40,10 @@ module Vool
     end
     def test_main_array
       check_array [MessageSetup, ArgumentTransfer, SimpleCall, SlotLoad, ReturnJump ,
-                    Label, ReturnSequence, Label]  , @main.mom_instructions.next
+                    Label, ReturnSequence, Label]  , @main.slot_instructions.next
     end
     def test_main_args
-      args = @main.mom_instructions.next(2)
+      args = @main.slot_instructions.next(2)
       assert_equal Parfait::Class , args.receiver.known_object.class
       assert_equal :Space , args.receiver.known_object.name
       assert_equal :some_inst , args.receiver.known_object.type.method_names.first