* lib/target-supports.exp (check_effective_target_lax_strtofp)
	(check_effective_target_dummy_wcsftime): New functions.

libstdc++-v3/testsuite/
	* 22_locale/time_put/put/wchar_t/1.cc: XFAIL if dummy_wcsftime.
	* 22_locale/time_put/put/wchar_t/5.cc: Likewise.
	* 22_locale/time_put/put/wchar_t/9.cc: Likewise.
	* 22_locale/time_put/put/wchar_t/10.cc: Likewise.
	* 22_locale/num_get/get/wchar_t/2.cc: XFAIL if lax_strtofp.
	* 22_locale/num_get/get/char/2.cc: Likewise.
	* 27_io/basic_istream/extractors_arithmetic/wchar_t/12.cc: Likewise.
	* 27_io/basic_istream/extractors_arithmetic/wchar_t/09.cc: Likewise.
	* 27_io/basic_istream/extractors_arithmetic/char/12.cc: Likewise.
	* 27_io/basic_istream/extractors_arithmetic/char/09.cc: Likewise.
	* 27_io/basic_ostream/inserters_arithmetic/wchar_t/6.cc: Likewise.
	* 27_io/basic_ostream/inserters_arithmetic/char/6.cc: Likewise.
	* 26_numerics/cmath/c99_classification_macros_c++.cc: XFAIL
	for uClibc.
	* 26_numerics/cmath/c99_classification_macros_c.cc: Likewise.

From-SVN: r121749