Bug#819361: openssh-client: ssh/scp rekey fails when using GSSAPI KEX

[rave dog]

Even if there is no immediate fix between 2-2 and 2-4 perhaps, this bug is
still relevant in version 7.2p2-4. Interestingly enough it does not seem to
honor the "ReKeyLimit 0G" either to bypass it completely.

br,

R