* config/ia64/nm-linux.h (NATIVE_XFER_UNWIND_TABLE): New macro to
set up the ia64 linux native target method for getting the kernel
unwind table.
* ia64-linux-nat.c (ia64_linux_xfer_unwind_table): New function.
* inftarg.c (child_xfer_partial): Enable section of code to
handle TARGET_OBJECT_UNWIND_TABLE.
* target.h (target_object): Add new TARGET_OBJECT_UNWIND_TABLE macro.