. Unbreak by finding a MASTER_SITE that still carries the distfile. It
also doesn't require manual downloading, so remove the code to prompt
Note that although the checksum has changed, there are no differences
in the distfile save for the compression. I compared the uncompressed
tarball against one from http://www.etn.yz.yamagata-u.ac.jp/ipv6arc/socks/
which corresponded to the old checksum and they were identical (md5).
I chose to use the SGI MASTER_SITE instead since it would presumably
have more bandwidth.
Approved by: Josh Paetzel <email@example.com> (MAINTAINER)