[PATCH 2/4] ia64: Remove sigprocmask/sigblock objects from libpthread

[Florian Weimer]

* Adhemerval Zanella via Libc-alpha:

> It is required because __libc_unwind_longjmp (used on thread
> cancellation) calls __sigprocmask.  Replace with a direct call.
>
> The sigblock was never exported and thus unused.

Perhaps:

They are required because __libc_unwind_longjmp (used for thread
cancellation) calls __sigprocmask.  Replace this with a direct call.

The sigblock function is not exported and is not used internally, so
it can be removed.


> Checked on cross build for ia64-linux-gnu.

I can put this through a build-many-glibcs.py run just to be sure
(once the first patch is ready as well), but change itself looks good
to me.