added support for multi charset mails: charset=us-ascii:iso-8859-15:iso-8859-1:utf-8
added support for multi charset mails: charset=us-ascii:iso-8859-15:iso-8859-1:utf-8


git-svn-id: d99324e817494df82bb0080d8e7ab74680731a10@2057 13f79535-47bb-0310-9956-ffa450edef68

apache/spamassassin,apache/spamassassin,apache/spamassassin,apache/spamassassin,apache/spamassassin