close #21

Mostly replaced Fixnum with integer
also in the rx-file dependency
all travis and testing with 2.4+

lib/risc/collector.rb

@@ -34,7 +34,7 @@ module Risc
     # Objects are data and get assembled after functions
     def self.add_object( objekt , depth)
       return false if Position.set?(objekt)
-      return true if objekt.is_a? Fixnum
+      return true if objekt.is_a? ::Integer
       return true if objekt.is_a?( Risc::Label)
       #puts message(objekt , depth)
       #puts "ADD #{objekt.inspect}, #{objekt.name}" if objekt.is_a? Parfait::CallableMethod

lib/risc/interpreter.rb

@@ -73,7 +73,7 @@ module Risc
 
     def set_register( reg , val )
       old = get_register( reg ) # also ensures format
-      if val.is_a? Fixnum
+      if val.is_a? ::Integer
         @flags[:zero] = (val == 0)
         @flags[:plus] = (val >= 0)
         @flags[:minus] = (val < 0)
@@ -190,7 +190,7 @@ module Risc
       end
       raise "Unsupported action, must convert symbol to word:#{object}" if object.is_a?(Symbol)
       value = object.get_char( index )
-      #value = value.object_id unless value.is_a? Fixnum
+      #value = value.object_id unless value.is_a? ::Integer
       set_register( @instruction.register , value )
       true
     end

lib/risc/register_value.rb

@@ -142,7 +142,7 @@ module Risc
       when Label
         ins = Risc.load_constant("#{right.class} to #{self.type}" , right , self)
         builder.compiler.add_constant(right.address) if builder
-      when Fixnum
+      when ::Integer
         ins = Risc.load_data("#{right.class} to #{self.type}" , right , self)
       when RegisterValue
         ins = Risc.transfer("#{right.type} to #{self.type}" , right , self)

lib/risc/text_writer.rb

@@ -206,7 +206,7 @@ module Risc
       case object
       when nil
         @stream.write_signed_int_32(0)
-      when Fixnum
+      when ::Integer
         @stream.write_signed_int_32(object)
       else
         @stream.write_signed_int_32(Position.get(object) + @linker.platform.loaded_at)