ack: Update to version 2.14.

Signed-off-by: Rudá Moura <ruda.moura@gmail.com>
axel: Update

Signed-off-by: Rudá Moura <ruda.moura@gmail.com>
autossh: Update to version 1.4d.

Signed-off-by: Rudá Moura <ruda.moura@gmail.com>