Hi, This patchset adds a new library irqhelp for assisting the attachment of irq handlers in userspace.
The previous problem was that return(NULL) was crashing netdde while pthread_exit(NULL) works for exiting the irq thread cleanly. The mach_msg_server thread now shuts down cleanly by setting the irq->port to a dead name outside of the irq handler thread, thus not requiring a new interrupt to be triggered to shut the thread down. TESTED: by compiling netdde.static and trying ifdown/ifup a few times and transferring a large file from the vm. Thanks, Damien
