Change seek method
Change seek method

The wrapper around seek would sometimes change offsets before
passing to lseek.  Directly call lseek since python appears
to be making some sort of mistake in some cases.

jjohnson42/confluent,xcat2/confluent,jjohnson42/confluent,xcat2/confluent,jjohnson42/confluent,xcat2/confluent,xcat2/confluent,xcat2/confluent,jjohnson42/confluent,jjohnson42/confluent