General cleanup and reformatting of some F# code originally imported from the F# PowerPack. Functionality is unchanged, but this will make it easier to implement new functionality in the future.
Merge branch 'master' into fs-bignum-cleanup
Removed Complex.fsi from secondary project files.
Merge pull request #193 from jack-pappas/fs-bignum-cleanup

General cleanup of Complex and BigRational code imported from the F# PowerPack