imported postfix 2.8.8

HISTORY

src/bounce/bounce_trace_service.c

src/global/dict_ldap.c

src/global/dict_sqlite.c

src/global/mail_version.h

src/global/maps.c

src/local/mailbox.c

src/local/unknown.c

src/tlsproxy/tlsproxy.c

src/util/dict.c

src/xsasl/xsasl_dovecot_server.c