pass return integer back out through exit

for testing of binaries later (and off course general correctness)
Some tests were using the fact that the interpreter was used, changed those to return ints rather than strings

test/risc/mains/test_adds.rb

@@ -13,8 +13,7 @@ module Mains
         end
         return a
 HERE
-      assert_equal Parfait::Integer , get_return.class
-      assert_equal 10 , get_return.value
+      assert_equal 10 , get_return
     end
     def test_ruby_subs
       run_main <<HERE
@@ -24,8 +23,7 @@ HERE
         end
         return b
 HERE
-      assert_equal Parfait::Integer , get_return.class
-      assert_equal 0 , get_return.value
+      assert_equal 0 , get_return
     end
     def test_ruby_adds_fibo
       run_main <<HERE
@@ -41,8 +39,7 @@ HERE
         end
       	return result
 HERE
-      assert_equal Parfait::Integer , get_return.class
-      assert_equal 8 , get_return.value
+      assert_equal 8 , get_return
     end
   end
 end

test/risc/mains/test_puts.rb

@@ -1,13 +1,12 @@
 require_relative 'helper'
 
 module Mains
-  class TestPuts #< MainsTest
+  class TestPuts < MainsTest
 
     def test_say_hi
       hi = "Hello there"
-      run_main "'#{hi}'.putstring"
-      assert_equal Parfait::Integer , get_return.class
-      assert_equal hi.length , get_return.value
+      run_main_return "'#{hi}'.putstring"
+      assert_equal hi.length , get_return
       assert_equal hi , @interpreter.stdout
     end
   end