Hook for custom greetings

— explanation from Xavier Dutoit on the use cases ----------------
If I have to choose the salutation type on a per contact, it puts the user in charge of choosing Chère when choosing Female. That's asking them to do something the system should do for them, not that they do for the system.

Beside, and I'm probably being an edge case, but the salutation is ideally not based on the contact, but on the mailing language as well. We do write to the same contact in different languages. When there is a planned mailing, we have the time to translate the document to the national language, when that's an alert, that's sent in english for instance.

Don't have any idea of the complexity, but if I can have a

{function.customGreating1(contact.first_name,contact.last_name,contact.gender)}

and have a php file where I can put a

function customGreating1($first,$last$gender) {}

I'm quite sure even the most wicked case is covered, and you're able to write custom message based on the group, the tag, the third custom field on the left and the captain's age...