fix if to_vool

and add (simple) hoisting tests

lib/ruby/if_statement.rb

@@ -14,8 +14,8 @@ module Ruby
 
     def to_vool
       cond , rest = *normalize_name(@condition)
-      fals = @if_false ? @if_false.normalize : nil
-      me = IfStatement.new(cond , @if_true.normalize, fals)
+      fals = @if_false ? @if_false.to_vool : nil
+      me = Vool::IfStatement.new(cond , @if_true.to_vool, fals)
       return me unless rest
       rest << me
       rest

lib/ruby/normalizer.rb

@@ -12,7 +12,7 @@ module Ruby
       if( condition.is_a?(ScopeStatement) and condition.single?)
         condition = condition.first
       end
-      return [condition] if condition.is_a?(Named) or condition.is_a?(Constant)
+      return [condition.to_vool] if condition.is_a?(Named) or condition.is_a?(Constant)
       condition = condition.to_vool
       local = "tmp_#{object_id}".to_sym
       assign = Vool::Statements.new [Vool::LocalAssignment.new( local , condition)]