Add simd_fast_mersenne_twister_engine class.

Add simd_fast_mersenne_twister_engine class.

	* include/ext/random: New file.
	* include/ext/random.tcc: New file.
	* include/Makefile.am (ext_headers): Add random and random.tcc.
	* testsuite/26_numerics/random/simd_fast_mersenne_twister_engine/
	operators/inequal.cc: New file.
	* testsuite/26_numerics/random/simd_fast_mersenne_twister_engine/
	operators/equal.cc: New file.
	* testsuite/26_numerics/random/simd_fast_mersenne_twister_engine/
	operators/serialize.cc: New file.
	* testsuite/26_numerics/random/simd_fast_mersenne_twister_engine/
	cons/seed2.cc: New file.
	* testsuite/26_numerics/random/simd_fast_mersenne_twister_engine/
	cons/default.cc: New file.
	* testsuite/26_numerics/random/simd_fast_mersenne_twister_engine/
	cons/seed_seq.cc: New file.
	* testsuite/26_numerics/random/simd_fast_mersenne_twister_engine/
	cons/copy.cc: New file.
	* testsuite/26_numerics/random/simd_fast_mersenne_twister_engine/
	cons/seed1.cc: New file.

From-SVN: r190783