PR c++/33979 (partial)

2008-05-20  Paolo Carlini  <paolo.carlini@oracle.com>

	PR c++/33979 (partial)
	* include/tr1_impl/functional_hash.h (hash<char16_t>,
	hash<char32_t>): Add specializations.
	* include/tr1_impl/type_traits (is_integral<char16_t>,
	is_integral<char32_t>): Likewise.
	* include/std/limits (numeric_limits<char16_t>,
	numeric_limits<char32_t>): Likewise.
	* src/limits_c++0x.cc: Add.
	* src/Makefile.am: Update.
	* testsuite/20_util/hash/requirements/explicit_instantiation.cc:
	Update.
	* testsuite/20_util/is_integral/value.cc: New.
	* testsuite/20_util/is_integral/requirements/typedefs.cc: Likewise.
	* testsuite/20_util/is_integral/requirements/
	explicit_instantiation.cc: Likewise.
	* testsuite/18_support/numeric_limits/char16_32_t.cc: Likewise.	
	* config/abi/pre/gnu.ver: Export new numeric_limits symbols at
	GLIBCXX_3.4.11.
	* configure: Regenerate.
	* src/Makefile.in: Likewise.
	* config.h.in: Likewise.

From-SVN: r135668