Review Request: BigInteger patch for efficient multiplication and division (#4837946)

[Tim Buktu]

Hello,

I updated my patch that speeds up multiplication and division of large
BigIntegers. The changes vs. the older patch were trivial.

BigInteger.java: https://gist.github.com/1576025
Diff against current BigInteger: https://gist.github.com/1576016

The patch to the unit test still applies.
BigIntegerTest.java: https://gist.github.com/1586990
Diff against current BigIntegerTest.java: https://gist.github.com/1586984

See the original posts at
http://mail.openjdk.java.net/pipermail/core-libs-dev/2012-January/008860.html
and
http://mail.openjdk.java.net/pipermail/core-libs-dev/2012-January/008875.html

Comments and critique are appreciated.

Thanks,
Tim