qmail-log.5: Add reference to errors from $QMAILQUEUE script
qmail-queue.8: Add explanation of $QMAILQUEUE
Import qmail-ldap 19980906
Import qmail-ldap 19981025
Import qmail-ldap 19981114
Import qmail-ldap 19990501
Import qmail-ldap 19990525
Import qmail-ldap 19990805
Import qmail-ldap 19991007
Import qmail-ldap 20000301-preview
Import qmail-ldap 20000325
Import qmail-ldap 20000401
Import qmail-ldap 20000501
Import qmail-ldap 20000601
Import qmail-ldap 20000701
Import qmail-ldap 20001201
Import qmail-ldap 20010101
Import qmail-ldap 20010201
Import qmail-ldap 20010301
Import qmail-ldap 20010501