Add a configuration option to toggle Cookies compression

[AnnoyingTechnology]

use this existing option (that currently only applies to the Store/Filesystem)

[store]
compress = 0

This option is mandatory to pass Session cookies to bash. As the compressed cookies contain null-bytes, not accepted by bash.

[AnnoyingTechnology]

closed in 16c39d6

leaving the compress option to 1 is backward compatible.