Lots of preloading for tests

so many relied (implicitly( on some builtin function
after all can't do much in ruby without calling
Now all those dependencies are explicit
Small risc changes come because the macro version has a return label and unreachable label

test/risc/interpreter/blocks/test_call_simple.rb

@@ -4,6 +4,7 @@ module Risc
   class BlockCallSimple < MiniTest::Test
     include Ticker
     def setup
+      @preload = "Integer.div4"
       @string_input = block_main("a = yielder {return 16.div4} ; return a")
       super
     end

test/risc/interpreter/blocks/test_call_simple_args.rb

@@ -1,7 +1,7 @@
 require_relative "../helper"
 
 module Risc
-  class BlockCallSimpleWithArg# < MiniTest::Test
+  class BlockCallSimpleWithArg < MiniTest::Test
     include Ticker
     def setup
       @string_input = block_main("a = tenner {|b| return b} ; return a" , tenner)
@@ -15,6 +15,7 @@ module Risc
   class BlockCallArgOp < MiniTest::Test
     include Ticker
     def setup
+      @preload = "Integer.mul"
       @string_input = block_main("a = tenner {|b| return 2 * b} ; return a" , tenner)
       super
     end

test/risc/interpreter/blocks/test_dyn_call.rb

@@ -4,6 +4,7 @@ module Risc
   class BlockCallDyn < MiniTest::Test
     include Ticker
     def setup
+      @preload = "Integer.div4"
       @string_input = block_main("a = tenner {|b| return b.div4} ; return a" , tenner)
       super
     end
@@ -16,6 +17,7 @@ module Risc
   class BlockCallArgOpDyn < MiniTest::Test
     include Ticker
     def setup
+      @preload = "Integer.mul"
       @string_input = block_main("a = tenner {|b| return b*b} ; return a" , tenner)
       super
     end

test/risc/interpreter/blocks/test_if.rb

@@ -4,6 +4,7 @@ module Risc
   module BlockIfOp
     include Ticker
     def setup
+      @preload = "Integer.gt;Integer.lt"
       @string_input = block_main("a = tenner {|b| if( b #{op} 5 ); return 1;else;return 2;end } ; return a" , tenner)
       super
     end

test/risc/interpreter/blocks/test_while.rb

@@ -4,6 +4,7 @@ module Risc
   class BlockWhile < MiniTest::Test
     include Ticker
     def setup
+      @preload = "Integer.gt;Integer.minus"
       @string_input = block_main("a = tenner {|b| #{while_str} } ; return a" , tenner)
       super
     end