ext/gnomevfs/gstgnomevfssink.c: Fix erase signal. Don't erase by default. Remove...

ext/gnomevfs/gstgnomevfssink.c: Fix erase signal. Don't erase by default. Remove handoff signal.

Original commit message from CVS:
* ext/gnomevfs/gstgnomevfssink.c: (gst_gnomevfssink_base_init),
(_gst_boolean_did_something_accumulator),
(gst_gnomevfssink_class_init), (gst_gnomevfssink_dispose),
(gst_gnomevfssink_init), (gst_gnomevfssink_set_property),
(gst_gnomevfssink_get_property), (gst_gnomevfssink_open_file),
(gst_gnomevfssink_close_file), (gst_gnomevfssink_chain),
(gst_gnomevfssink_change_state):
Fix erase signal. Don't erase by default. Remove handoff signal.
Remove erase property. Don't segfault. General cleanup.