Pull misc-2.6.40 into release branch

	unsigned int depth;

	struct pt_regs *regs;

	struct unw_frame_info frame;

	u64 *prev_pfs_loc;	/* state for WAR for old spinlock ool code */

	unsigned long *prev_pfs_loc;	/* state for WAR for old spinlock ool code */

} ia64_backtrace_t;

/* Returns non-zero if the PC is in the Interrupt Vector Table */