8079782: RandomFactory should be in the jdk.testlibrary package
Reviewed-by: bpb

8078672: Print and allow setting by Java property seeds used to initialize Random instances in java.lang numerics tests
Summary: Add ability to initial the random number generator from the system property "seed" and print to STDOUT the seed value actually used.
Reviewed-by: darcy

8078334: Mark regression tests using randomness
Reviewed-by: xuelei, alanb

8074460: Always print seeds used in [Splittable]Random instances in java.math tests
Summary: Create a utility class which creates a pseudorandom number generator (PRNG) and retains the seed. Use this class in java.math tests which use a PRNG. Always print the seed value before the PRNG is used.
Reviewed-by: darcy

8027595: Enable BigInteger overflow tests in JTREG
Summary: Remove space in @test tags, remove OOME catches, add @run tag for StringConstructorOverflow.
Reviewed-by: mduigou

6910473: java.math.BigInteger.bitLength() may return negative "int" on large numbers
8021203: BigInteger.doubleValue/floatValue returns 0.0 instead of Infinity
8021204: Constructor BigInteger(String val, int radix) doesn't detect overflow
8022780: Incorrect BigInteger division because of MutableBigInteger.bitLength() overflow
Summary: Prevent construction of overflowed BigIntegers.
Reviewed-by: bpb, darcy, psandoz
Contributed-by: Dmitry Nadezhin <dmitry.nadezhin@oracle.com>