debian: update ruby binary extension install path From Christian Hofstaedler, Debian bug 739120: When ruby-defaults > 1:2.0 will be uploaded to sid, the version of Ruby provided by the 'ruby' and 'ruby-dev' packages will change to version 2.0. This version change includes a change to the path for binary extensions. This patch works for Ruby 1.9.1 as well as Ruby 2.0, so it's safe to apply now.
debian: rename notmuch-ruby to ruby-notmuch This seems more in line with http://wiki.debian.org/Teams/Ruby/Packaging#Guidelines_for_Ruby_packaging