gst/gstpipeline.c: When we create a pipeline bus, initially create it in flushing...

gst/gstpipeline.c: When we create a pipeline bus, initially create it in flushing mode.

Original commit message from CVS:
* gst/gstpipeline.c: (gst_pipeline_init):
When we create a pipeline bus, initially create it in flushing mode.
Fixes leaks in at least one test, and makes a new pipeline work the
same as one that has gone to READY and then back to NULL.

* gst/gstelement.c:
Typo fix in docs.