This is the part which adds XML support for the "catch syscall" feature.
I decided to put the architecture's XML files here too, so that the
architecture-independent part does not grow too much.

Regards,

-- 
Sérgio Durigan Júnior
Linux on Power Toolchain - Software Engineer
Linux Technology Center - LTC
IBM Brazil

gdb/ChangeLog:

2008-11-04  Sergio Durigan Junior  <sergiodj@linux.vnet.ibm.com>

	* gdb-syscalls.dtd: New definition file for syscall's XML
	support.
	* i386-syscalls.xml: New file for i386 syscalls.
	* ppc-syscalls.xml: New file for PPC syscalls.
	* ppc64-syscalls.xml: New file for PPC64 syscalls.
	* xml-syscall.c: New file containing functions for manipulating
	syscall's XML files.
	* xml-syscall.h: New file, exporting the functions above mentioned.