Commit e717d1dc interacts badly with
commit 7b2a0e54:
the newly added "long" variables serialized to SvStream with
operator>>/<< now read/write 8 bytes.

Using "long" for binary serialized integers is an idiotic idea in the
first place.

Change-Id: I9432c1bb2c339e797c064371f2cbdcfec2200994