Override PartialOrd methods for bool
I noticed that `PartialOrd` implementation for `bool` does not override the individual operator methods, unlike the other primitive types like `char` and integers.
This commit extracts these `PartialOrd` overrides shared by the other primitive types into a macro and calls it on `bool` too.
CC `@scottmcm` for our recent adventures in `PartialOrd` land
Jacob Pratt
deb987b69d