core.sys/core.stdc vs. std.c?

[Daniel Gibson]

Am 12.06.2011 08:38, schrieb David Nadlinger:
> core.stdc is the place for C standard library modules, core.sys.* are
> where the C operating system header translations reside – this is our
> current policy, right? If so (I can't actually remember any formal
> decision or discussion), is there a reason we still have so much code in
> std.c?
> 
> David

And why is core.stdc not listed on
http://www.digitalmars.com/d/2.0/phobos/phobos.html and
http://d-programming-language.org/phobos/index.html ?

Furthermore it'd be nice if the functions contained there were
documented or at least listed.

Cheers,
- Daniel