[ccan] Portability [was Mathematics Module]

[Adam Kennedy]

I concur, btw.

2009/1/30 Rusty Russell <rusty at rustcorp.com.au>:
> 1) Don't go looking for portability problems: wait for reports then solve
>   them.  Otherwise you end up with untested ifdefs and messy code.
>
> 2) Sometimes the answer will be YA ccan module, sometimes it will be to
>   indicate a requirement for the module to be used at all (eg. HAVE_X11
>   tests in an x11 drawing library would be silly).