Revert "Merge pull request #11 from Lastique/modularization"

This reverts commit a9a1eddba8, reversing
changes made to d6bc9845ba.

test/apply_wrap.cpp

@@ -15,7 +15,7 @@
 #include <boost/mpl/limits/arity.hpp>
 #include <boost/mpl/aux_/preprocessor/params.hpp>
 #include <boost/mpl/aux_/preprocessor/enum.hpp>
-#include <boost/type_traits/is_same.hpp>
+#include <boost/mpl/aux_/test.hpp>
 
 #include <boost/preprocessor/repeat.hpp>
 #include <boost/preprocessor/comma_if.hpp>
@@ -23,8 +23,6 @@
 #include <boost/preprocessor/if.hpp>
 #include <boost/preprocessor/cat.hpp>
 
-#include "test.hpp"
-
 #if !defined(BOOST_MPL_CFG_NO_DEFAULT_PARAMETERS_IN_NESTED_TEMPLATES)
 #   define APPLY_0_FUNC_DEF(i) \
     struct f0 \