dirmngr: Load all system provided certificates.
* configure.ac: Add option --default-trust-store. (DEFAULT_TRUST_STORE_FILE): New ac_define. * dirmngr/certcache.c: Include ksba-io-support.h. (total_trusted_certificates, total_system_trusted_certificates): New. (put_cert): Manage the new counters. (cert_cache_deinit): Reset them. (cert_cache_print_stats): Print them. (is_trusted_cert): Add arg WITH_SYSTRUST. Change all callers to pass false. (load_certs_from_file): New. (load_certs_from_system): New. (cert_cache_init): Load system certificates.
Note that this code does not yet allow to load the system certificates
on Windows.
- Signed-off-by: Werner Koch <wk@gnupg.org>