v0.86

This adds "edit" support, to invoke a text-editor directly upon a script that is on the sieve-server, providing a fetch/edit/check/push workflow, based on a patch from Ian Campbell.

This also fixes the search for X.509 SSL/TLS certificates, so that just because openssl(1) reports OPENSSLDIR, that doesn't mean we believe that certs/ inside that directory must exist and be usable. Instead, we check; if that fails, we try the existing list of file locations, and if that still fails, we try a list of directory locations instead. This follows a bug report from LEVAI Daniel.