lib-sieve: storage: ldap: sieve-ldap-storage-settings - Use settings as parameter to sieve_ldap_settings_check() directly

lib-sieve: storage: file: sieve-file-storage - Move debug logging in sieve_file_storage_autodetect()

lib-sieve: storage: file: sieve-file-storage - Move storage creation in sieve_file_storage_autodetect()

lib-sieve: storage: file: sieve-file-storage - Perform write check earlier in sieve_file_storage_do_autodetect()

lib-sieve: storage: file: sieve-file-storage - Merge sieve_file_storage_autodetect() into sieve_file_storage_do_init_default()

For now, these yield the same result.

Open the default storage separately, rather then the script directly.

lib-sieve: plugins: include: ext-include-common - Allow retrieving global scripts from several storages

This allows adding storage class plugin support.

Serves to obtain clearer patches for subsequent commits.

Used user event before. This will be needed for retrieving settings in mailbox
context.