re PR libstdc++/44417 (make check-target-libstdc++-v3 fails due to undefined ptrdiff_t)

2010-06-07  Paolo Carlini  <paolo.carlini@oracle.com>

	PR libstdc++/44417
	* include/c_std/cwctype: Provide a workaround for bug glibc
	BZ 9694 affecting glibc 2.9 and older.
	* include/c_global/cwctype: Likewise.
	* testsuite/util/testsuite_abi.h: Remove temporary workaround.
	* testsuite/util/testsuite_allocator.h: Use everywhere std::size_t
	and std::ptrdiff_t, don't include <cstddef>.

	* testsuite/27_io/basic_ostream/inserters_other/wchar_t/
	error_code.cc: Minor tweak, prefer <cwchar> to <wchar.h>.

From-SVN: r160417