Temporary fix for large IRQ tables

Temporary fix for large IRQ tables

IRQ tables, trap tables and softirq tables can grow. The copy mechanism for
these is not correct when saving/restoring state, because it uses always the
name table size (which grows) to copy the saved/restored state snapshots.

We should change the g_new allocations for g_arrays, and use the array length as
boundary for the copy rather than the name table len.

TODO / FIXME !

I currently increased the initial irq name table size to 512 to deal correctly
with ARM. This is a dumb temporary fix.

Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>