[mythtv] Refactored OSX backend firewire patch

[Nigel Pearson]

> Here's a complete updated patch
>
> <darwin-backend.patch.bz2>

	I have started applying this. Sorry for the delay.
Hope you are still around, and interested in this.


1) Any chance of getting you to have another look at:
libs/libmythtv/firewirechannel.cpp
libs/libmythtv/firewirerecorder.cpp
libs/libmythtv/firewirerecorder.h

Those files have moved on far enough that I am not 100%
sure about the patch rejects I am getting.

2) I am curious about this:

Index: libs/libmythtv/tv_play.h
===================================================================
--- libs/libmythtv/tv_play.h    (revision 9197)
+++ libs/libmythtv/tv_play.h    (working copy)
@@ -231,7 +231,7 @@
      bool HasQueuedInput(void) const
          { return !GetQueuedInput().isEmpty(); }
      bool HasQueuedChannel(void) const
-        { return queuedChanID || !GetQueuedChanNum().isEmpty(); }
+        { return queuedChanID || !queuedChanNum.isEmpty(); }

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