adding integer compare tests and fixing returns

true, false and nll were not handled correctly as returns
returns assume int, and reduce. The solution (hack?) is to add fake numbers into true,false and nil that get returned from from the arm syscall
(and it works!, which means i can fix other tests now)

test/mains/test_int_cmp.rb

@@ -0,0 +1,60 @@
+require_relative "helper"
+
+module Mains
+  class CompareTester < MiniTest::Test
+    include MainsHelper
+      def setup
+        super
+        @preload = [:le,:ge,:gt,:lt].collect{|op| "Integer.#{op}"}.join(";")
+      end
+
+      def test_smaller_true
+        run_main_return "4 < 5"
+        assert_result 1 , ""
+      end
+      def test_smaller_false
+        run_main_return "6 < 5"
+        assert_result 0 , ""
+      end
+      def test_smaller_false_same
+        run_main_return "5 < 5"
+        assert_result 0 , ""
+       end
+      def test_larger_true
+        run_main_return "5 > 4"
+        assert_result 1 , ""
+      end
+      def test_larger_false
+        run_main_return "5 > 6"
+        assert_result 0 , ""
+      end
+      def test_larger_false_same
+        run_main_return "5 > 5"
+        assert_result 0 , ""
+      end
+      def test_smaller_or_true
+        run_main_return "4 <= 5"
+        assert_result 1 , ""
+      end
+      def test_smaller_or_false
+        run_main_return "6 <= 5"
+        assert_result 0 , ""
+      end
+      def test_smaller_or_same
+        run_main_return "5 <= 5"
+        assert_result 1 , ""
+      end
+      def test_larger_or_true
+        run_main_return "5 >= 4"
+        assert_result 1 , ""
+      end
+      def test_larger_or_false
+        run_main_return "5 >= 6"
+        assert_result 0 , ""
+      end
+      def test_larger_or_same
+        run_main_return "5 >= 5"
+        assert_result 1 , ""
+      end
+    end
+end