SCHEDULED for deprecation

[Tomasz]

This phrase gave me an idea for a small feat:

deprecated(2009-4-19) void foo();

Compiling references to the deprecated declaration *before* the deprecation date would result in a *warning*.
Compiling the deprecated declaration OR any reference to it *after* the date would result in an *error*.

Advantages for maintanance are obvious, plus, the feature seems easy to implement. What do you think?

Tomek