p5-math-bigint: new version 1.89

[stolen-from-macports-trac@…]

I'm attaching a portfile patch to update p5-math-bigint to Math::BigInt 1.89.

There is nothing wrong with the current version (1.87) in and of itself. But I am working on updating p5-math-bigrat, and that seems to want a version of Math::BigInt no older than 1.88.

[stolen-from-macports-trac@…]

Oh, wait. I forgot that there is something wrong with p5-math-bigint 1.87, but it's not a biggie. There was not a build dependency on port p5-test-simple. But most Perl geeks using MacPorts already have that installed, I presume, so the omission was unlikely to cause trouble.

[ryandesign@…]

Thanks! Updated in r39273.