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>