Add database table for catchall destinations
Catch-all aliases are stored for a domain. Since there can be multiple
destinations per domain, this is done using a 1:n relation on the gid.
This commit extends the SQL schema definition and also provides appropriate
upgrade DDL.
# All parameters are described in pgsql_table(5) / PGSQL PARAMETERS
#
# The hosts that Postfix will try to connect to and query from.
hosts = localhost
# The user name and password to log into the pgsql server.
user = postfix
password = some_password
# The database name on the servers.
dbname = mailsys
# The SQL query template used to search the database
query = SELECT gid FROM postfix_gid WHERE domainname='%d'