* testsuite/ext/type_traits/add_unsigned_floating_neg.cc: New.
* testsuite/ext/type_traits/add_unsigned_integer_neg.cc: New.
* testsuite/ext/type_traits/remove_unsigned_floating_neg.cc: New.
* testsuite/ext/type_traits/remove_unsigned_integer_neg.cc: New.
* testsuite/ext/type_traits/add_unsigned.cc: New.
* testsuite/ext/type_traits/remove_unsigned.cc: New.
* testsuite/ext/type_traits/add_unsigned_floating_neg.cc: New.
* testsuite/ext/type_traits/add_unsigned_integer_neg.cc: New.
* testsuite/ext/type_traits/remove_unsigned_floating_neg.cc: New.
* testsuite/ext/type_traits/remove_unsigned_integer_neg.cc: New.
* testsuite/ext/type_traits/add_unsigned.cc: New.
* testsuite/ext/type_traits/remove_unsigned.cc: New.