new syscall stub support for ia64 libc

[Ulrich Drepper]

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I've applied this patch now.  With the gcc changes Jakub posted today
I can build and run the code.

I made some changes, though.  Obviously the initfini code.  Please look
through all three files and send a patch with the remaining changes.
And we use the new syscall code now also for gcc so the appropriate
definition in the sysdep.h header has been changed.

Since the new glibc is needed at runtime it doesn't make much sense to
add configure tests for the new functionality.  We'll just have to have
a canned response like "get a new gcc" for people with problems.

Also, the ChangeLog was quite incomplete.

Thanks,

- -- 
➧ Ulrich Drepper ➧ Red Hat, Inc. ➧ 444 Castro St ➧ Mountain View, CA ❖
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