Fixing tests for implicit return

previous commit affected rather many test, as the implicit returns add extra instructions
Also added some explicit returns, so as not to test the return logic too much. return (ie return nl) is a knonwn 3 risc operation.

test/support/compiling.rb

@@ -26,7 +26,6 @@ module VoolCompile
   include ScopeHelper
   include Mom
 
-
   def compile_first_method( input )
     input = as_test_main( input )
     collection = RubyX::RubyXCompiler.new(RubyX.default_test_options).ruby_to_mom(input)