Update portsnap to version 0.9. This brings the following changes:
* SHA-256 has replaced SHA-1 as a hash function used for verifying
integrity of the ports tree.
* The RSA signature verification is now performed using OpenSSL
rather than "borrowing" code from FreeBSD Update.
* In addition to distributing the ports tree, portsnap now also
produces up-to-date INDEX, INDEX-4, and INDEX-5 files.
* When fetching a series of patches, portsnap now prints a simple
Submitted by: maintainer