ExternalStreamHandler: prevent an unlikely segfault
AvFormatDecoder::ProcessVideoFrame: Prevent a segfault.
Recently the V4L2_ENC_CMD_START has become less and less likely to actually
start encoding with the HD-PVR.  Go back to using a simple read instead,
which is more like what we did before adding HD-PVR support.

Further, give it several chances.  At least with the HD-PVR getting a
"Resource temporarily unavailable" is not uncommon.
RecorderBase::SetRecordingStatus: When entering a failing state, send REC_FAILING system event.
From 149a80a818218baa96e52f36798c6632e9a5bb91 Mon Sep 17 00:00:00 2001
Subject: [PATCH] Enhance tv_rec recording profile info message with cardid

Signed-off-by: John Poet <jpoet@mythtv.org>
From 0fa4cff4764e777e8211aaabce780944a87f622e Mon Sep 17 00:00:00 2001
Subject: [PATCH] Enhance tv_rec recording profile messages in fallback/error
 cases

Signed-off-by: John Poet <jpoet@mythtv.org>