* gnu/gcj/math/MPN.java(findLowestBit): Made methods public.
* java/math/BigInteger.java(BigInteger(int,int,java.util.Random):
New constructor.
(min): Implemented.
(max): Implemented.
(modPow): Rewritten to not use the naive, slow, brute force approach.
(isProbablePrime): Implemented.
(testBit): Implemented.
(flipBit): Implemented.
(getLowestSetBit): Implemented.
From-SVN: r31966