Solar_Mail_Message is missing a reset() Method

[Benjamin Kaineder/PACE]

Problem

The Solar_Mail_Message has no method which can be used to reset the address recipient list.

When sending a message to multiple recipients, it often is useful to create the message once, then send a message for each recipient (with the same content).

With the current implementation, a new message object has to be created to allow for this functionality.

Proposed solution

Implement a method, e.g. "resetAddresses()", which re-initializes the $_rcpt array.