nptl in libc archive

[Kevin P. Fleming]

Ulrich Drepper wrote:

> Before you update your glibc CVS working copy the next time remove or
> rename the nptl and nptl_db directories since they are now on
> sources.redhat.com as well.  The code will stay for the foreseeable
> future in the form of an add-on.
> 

Thanks for the warning, and for putting it into CVS... will make it 
much easier to keep track of NPTL updates this way.