This patch implements the support for SystemTap SDT probes on IA-64.

This patch implements the support for SystemTap SDT probes on IA-64.

Joel Brobecker reported a bug which was happening because of the
"Improved linker-debugger interface", by Gary Benson, when tested on
IA-64 with rhES5.  The message is:

<http://sourceware.org/ml/gdb-patches/2013-06/msg00745.html>

The failure happened because GDB was trying to parse the probes'
operands using only the generic parser (implemented on stap-probe.c),
because the arch-specific parser was not implemented.  Thus, I am
committing the following changes which solve the bug.

2013-06-29  Sergio Durigan Junior  <sergiodj@redhat.com>

	* ia64-linux-tdep.c: Include <ctype.h>.
	(ia64_linux_stap_is_single_operand): New function.
	(ia64_linux_init_abi): Initialize SystemTap related attributes.