[PATCH] Make hotplugging non-recursive.

[Rob Taylor]

2nd time lucky..

This adds a notify callback for when hald_runner has finished calling a
callout.
For linux, we install hotplug_event_process_queue as the notify, and
modify hotplug_event_process_queue to iterate the queue. All recrursive
calls to hotplug_event_process_queue are removed. This results in
massive stack and a not inconsiquential heap savings.
---
 hald/hald_runner.c    |   17 ++++++++++++++++-
 hald/hald_runner.h    |    3 +++
 hald/linux/blockdev.c |    2 --
 hald/linux/hotplug.c  |   38 ++++++++++++++++++--------------------
 hald/linux/osspec.c   |    5 ++---
 5 files changed, 39 insertions(+), 26 deletions(-)
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