rawparse: send SEEKING query upstream first

Sometimes rawparse does not handle the seeking query
properly, the rawparse should send the query upstream
first. For example, upstream could support seeking in
TIME format (but not in BYTE format), so the BYTE format
seeking query that rawparse sends in push mode would
fail.

https://bugzilla.gnome.org/show_bug.cgi?id=722764
1 file changed