type_traits: Implement is_pod, has_trivial_constructor, and has_trivial_destructor.

2004-12-26  Paolo Carlini  <pcarlini@suse.de>

	* include/tr1/type_traits: Implement is_pod, has_trivial_constructor,
	and has_trivial_destructor.
	* testsuite/tr1/4_metaprogramming/type_properties/
	has_trivial_constructor/has_trivial_constructor.cc: New.
	* testsuite/tr1/4_metaprogramming/type_properties/
	has_trivial_constructor/typedefs.cc: Likewise.
	* testsuite/tr1/4_metaprogramming/type_properties/
	has_trivial_destructor/has_trivial_destructor.cc: Likewise.
	* testsuite/tr1/4_metaprogramming/type_properties/
	has_trivial_destructor/typedefs.cc: Likewise.
	* testsuite/tr1/4_metaprogramming/type_properties/
	is_pod/is_pod.cc: Likewise.
	* testsuite/tr1/4_metaprogramming/type_properties/
	is_pod/typedefs.cc: Likewise.

From-SVN: r92618