revert to symbols

Parfait::Words were nice, but endless problems with the fact that when
you write “String” you get a string.
Symbols take care of uniqueness at the same time

test/arm/test_move.rb

@@ -33,7 +33,7 @@ class TestMoves < MiniTest::Test
     assert_code code , :mvn , [0x05,0x10,0xe0,0xe3] #e3 e0 10 05
   end
   def test_constant_small # like test_mov
-    const = Virtual.new_word "harvey"
+    const = :harvey
     const.set_position( 13 ) # 13 = 5 + 8 , 8 for the arm pipeline offset, gets subtracted
     code = @machine.mov :r1 , 5
     code.set_position(0)
@@ -41,7 +41,7 @@ class TestMoves < MiniTest::Test
     assert_code code , :mov , [0x05,0x10,0xa0,0xe3] #e3 ef 10 05
   end
   def test_constant_big # like test_mov_big
-    const = Virtual.new_word "harvey"
+    const = :harvey
     const.set_position( 0x222 )
     code = @machine.mov :r0 , 0x222
     code.set_position(0)

test/virtual/virtual_helper.rb

@@ -28,7 +28,17 @@ module VirtualHelper
   end
 
 end
-
+module Virtual
+  # Functions to generate parfait objects
+  def self.new_word( string )
+    string = string.to_s if string.is_a? Symbol
+    word = Parfait::Word.new_object( string.length )
+    string.codepoints.each_with_index do |code , index |
+      word.set_char(index + 1 , code)
+    end
+    word
+  end
+end
 class UnusedSofEquality
   # simple thought: don't recurse for Blocks, just check their names
   def == other