PLEASE REVIEW: MAINTAINER policy addendum to porters-handbook

[Alex Dupre]

Joe Marcus Clarke wrote:

> Can someone please review these
> changes, and let me know if they are okay to commit?  Thanks.

+    <para>If the maintainer of a port does not respond to a an update
...........................................................^^^^

+    not respond within three months, then that maintainer is considered
+    absent without leave, and they can be replaced as the maintainer of
...............................^^^^

--
Alex Dupre