[klibc] ia64: Replace pipe.c with pipe.S

There is a concern that use of macros inside "C" versions of
system call stubs could have licensing consequences. Remove
any doubt by re-writing the stub in assember.

[ hpa: specifically, the origin of this particular file is a bit murky
  so avoid any and all concerns by just replacing it; all other IA64
  system calls are already in pure assembly. ]

Signed-off-by: Tony Luck <tony.luck@intel.com>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2 files changed