clean up block names and export of qualified names makes assembler nicer to read

lib/ast/function_expression.rb

@@ -27,7 +27,7 @@ module Ast
         args << arg_value
       end
       class_name = context.current_class.name
-      function = Vm::Function.new("#{class_name}::#{name}" , args )
+      function = Vm::Function.new(name , args )
       context.current_class.add_function function 
 
       parent_locals = context.locals