re PR testsuite/65093 (26_numerics/random/binomial_distribution/operators/values.cc times out on slow targets)

	PR testsuite/65093
	* testsuite/26_numerics/random/binomial_distribution/operators/values.cc
	(test01): Add explanatory comment.  Keep only the bd1 sub-test and
	split out bd2, bd3, bd4, and bd5 sub-tests into...
	* testsuite/26_numerics/random/binomial_distribution/operators/values2.cc,
	testsuite/26_numerics/random/binomial_distribution/operators/values3.cc,
	testsuite/26_numerics/random/binomial_distribution/operators/values4.cc,
	testsuite/26_numerics/random/binomial_distribution/operators/values5.cc:
	New separate files with the old parts.

From-SVN: r220821