Don't raise max-cache-ttl to default-cache-ttl.
* agent/gpg-agent.c (finalize_rereadable_options): Don't raise max-cache-ttl to default-cache-ttl. Likewise for max-cache-ttl-ssh and default-cache-ttl-ssh.
This closes issue #2009.
- Signed-off-by: Neal H. Walfield <neal@g10code.com>