ext/raw1394/: Implement GstPropertyProbe interface and add "device-name" property...

ext/raw1394/: Implement GstPropertyProbe interface and add "device-name" property, so applications can use this to pr...

Original commit message from CVS:
Patch by: Julien Puydt <julien dot puydt at laposte net>
* ext/raw1394/Makefile.am:
* ext/raw1394/gst1394probe.c: (gst_1394_get_guid_array),
(gst_1394_property_probe_get_properties),
(gst_1394_property_probe_probe_property),
(gst_1394_property_probe_needs_probe),
(gst_1394_property_probe_get_values),
(gst_1394_property_probe_interface_init),
(gst_1394_type_add_property_probe_interface):
* ext/raw1394/gst1394probe.h: (GST_1394_PROBE_H):
* ext/raw1394/gstdv1394src.c: (_do_init), (gst_dv1394src_class_init),
(gst_dv1394src_init), (gst_dv1394src_dispose),
(gst_dv1394src_set_property), (gst_dv1394src_get_property),
(gst_dv1394src_discover_avc_node), (gst_dv1394src_query),
(gst_dv1394src_update_device_name):
* ext/raw1394/gstdv1394src.h:
Implement GstPropertyProbe interface and add "device-name" property,
so applications can use this to probe for available devices in the
same way they can already with v4lsrc and v4l2src (however horrible
this property probe interface may be). Fixes #358841.