move space to parfait

Also make the machine the singleton
and space hang off it

Many repercussions, not all fixed in this commit

test/fragments/helper.rb

@@ -13,7 +13,7 @@ require 'parslet/convenience'
 module Fragments
   # need a code generator, for arm 
   def setup
-    @object_space = Boot::BootSpace.new "Arm"
+    @object_space = Boot::Space.new "Arm"
   end
 
   def parse 

test/virtual/hello.rb

@@ -7,10 +7,10 @@ class HelloTest < MiniTest::Test
     machine = Virtual::Machine.boot
     expressions = machine.compile_main @string_input
 
-    writer = Elf::ObjectWriter.new(Virtual::BootSpace.space)
+    writer = Elf::ObjectWriter.new(Virtual::Space.space)
     writer.save "hello.o"
 #    puts Sof::Writer.write(expressions)
-    puts Sof::Writer.write(Virtual::BootSpace.space)
+    puts Sof::Writer.write(Virtual::Space.space)
   end
 
   def qtest_simplest_function

test/virtual/virtual_helper.rb

@@ -5,7 +5,7 @@ require "yaml"
 module VirtualHelper
   # need a code generator, for arm
   def setup
-#    @object_space = Boot::BootSpace.new "Arm"
+#    @object_space = Boot::Space.new "Arm"
   end
 
   def check