
Description:

Adds support for the Sieve 'vnd.cyrus.redirect-multiple' extension
which allows the 'redirect' action to accept a stringlist of email
addresses, in addition to the standard single string.
Cyrus will use a single SMTP transaction, providing each address
as a RCPT TO and stop script processing when any response is an error.


Config changes:

The 'sieve_extensions' option now accepts the value
'vnd.cyrus.redirect-multiple' to enable the extension in timsieved.


Upgrade instructions:

None, as the Cyrus Sieve engine will continue to process existing
bytecode containing the 'redirect' action.
