re PR libstdc++/55215 (Constructor seeding is broken for Mersenne twister)

re PR libstdc++/55215 (Constructor seeding is broken for Mersenne twister)

2012-11-05  Paolo Carlini  <paolo.carlini@oracle.com>

	PR libstdc++/55215
	* include/bits/random.tcc (mersenne_twister_engine<>::seed(_Sseq&)):
	Assign state_size to _M_p.
	* testsuite/26_numerics/random/mersenne_twister_engine/cons/55215.cc:
	New.
	* testsuite/26_numerics/random/independent_bits_engine/cons/55215.cc:
	Likewise.
	* testsuite/26_numerics/random/shuffle_order_engine/cons/55215.cc:
	Likewise.
	* testsuite/26_numerics/random/subtract_with_carry_engine/cons/
	55215.cc: Likewise.
	* testsuite/26_numerics/random/discard_block_engine/cons/55215.cc:
	Likewise.
	* testsuite/26_numerics/random/linear_congruential_engine/cons/
	55215.cc: Likewise.

From-SVN: r193181