Note that you'll have to rebuild all the installed ruby modules
if you upgrade. To do it, just install the latest portupgrade and
hit `portupgrade -rfcC ruby'.
temporarily stop linking ruby with libc_r. This will break such
extension modules as ruby-qt, but we have to investigate the
annoying problems we are seeing, present in both ruby and our libc_r.
Once suggested by: green
Remove shells/ruby-shell as it is now part of the standard distribution.
(in both Ruby 1.6.4 and 1.7.0)
Mark security/ruby-sha1 broken for Ruby >= 1.7.0, as it is also part of the
standard distribution now.