DeadUrl: version 5.5.6-r4: SRC_URI: 404 Client Error: Not Found for url: http://groups.csail.mit.edu/mac/ftpdir/scm/scm-5e6.zip
  HttpsUrlAvailable: version 5.5.6-r4: HOMEPAGE: HTTPS url available: http://swiss.csail.mit.edu/~jaffer/SCM -> https://swiss.csail.mit.edu/~jaffer/SCM