gst/base/gstbasesink.c: 0 segment values are 0 in any format.

gst/base/gstbasesink.c: 0 segment values are 0 in any format.

Original commit message from CVS:
* gst/base/gstbasesink.c: (gst_base_sink_handle_object):
0 segment values are 0 in any format.

* gst/base/gstbasetransform.c: (gst_base_transform_event):
* gst/base/gstbasetransform.h:
Parse newsegment correctly in basetransform

* gst/elements/gstidentity.c: (gst_identity_transform_ip):
Sync to clock using updated segment values.