utility: Include <initializer_list>, per the current WP.

2008-07-29  Paolo Carlini  <paolo.carlini@oracle.com>

	* include/std/utility: Include <initializer_list>, per the current WP.

	* testsuite/lib/libstdc++.exp (check_v3_target_cstdint): Tweak,
	don't use -std=gnu++0x unnecessarily.
	* testsuite/18_support/numeric_limits/char16_32_t.cc: Use
	dg-require-cstdint.
	* testsuite/18_support/headers/cstdint/types_std_c++0x.cc: Likewise.
	* testsuite/tr1/8_c_compatibility/cstdint/types_std_tr1.cc: Likewise.

From-SVN: r138255