ia64: Full irq cleanup

Tony,

I took some time and went through the ia64 tree to sort out the remaining issues aside of the irq_chip conversion.

The series is a bit longer now and fixes some odd ends first, which I missed in the previous iteration.

It further cleans up the open coded irq_desc and status access all over the place, which is necessary that the core code can drop all the deprecated and compat stuff.

The last patches switch ia64 over to the generic show_interrupt() implementation and do the final namespace cleanup for the irq_* functions.

Thanks,

tglx