Re: [boost] [math][integer] Moving integer utilities out of themathlib.

Let me know if there's anything else with which I can help.

I suppose I should probably fix Rational, because it currently has no maintainer. It has many unmerged changes though, some quite extensive. I'm also getting a test failure on develop (with msvc-8.0): rational_test.cpp(983): error: in "rational_cross_constructor_test": check half_mu2.denominator() == MyOverflowingUnsigned(2u) has failed [1635872 != 2] that is not present on master.