nptl 0.51

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I've uploaded new sources to the usual place:

  http://people.redhat.com/drepper/nptl/nptl-0.51.tar.bz2
   ftp://people.redhat.com/drepper/nptl/nptl-0.51.tar.bz2

Changes include:

~ a gcc with C cleanup handling is now enforced

~ fix pthread_once() handling when cancellation is used.  I've fixed
  only ia32 and hammer so far.  All ports will need some attention

~ beginning of the Alpha port added

~ more cancellation handling support for libc


I've also fixed a problem with kernels which have vsyscall support but
not the vsyscall DSO.  This includes the RHL9 kernels.  Some people
reported problems with those kernels.  It should work now.  You need a
very recent kernel: 2003-07-02T02:00:00-0700.  The gcc requirement is
automatically enforced.  binutils also have to be recent enough to
support .cfi_rel_offset.  I'll add a check for this soon.  It's not
possible to generate a correct libpthread DSO without such new binutils
so I'll make this a hard requirement, too.

- -- 
- --------------.                        ,-.            444 Castro Street
Ulrich Drepper \    ,-----------------'   \ Mountain View, CA 94041 USA
Red Hat         `--' drepper at redhat.com `---------------------------
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