Check in Ubuntu Utopic Ruby Trollop source pkg

Check in the source package for Ubuntu Utopic's Ruby Trollop, ready for
backporting to Precise.

Downloaded from:
http://archive.ubuntu.com/ubuntu/pool/universe/r/ruby-trollop/ruby-trollop_2.0-1.debian.tar.xz
Update changelog and control file for backport

Backport Ruby Trollop to Ubuntu Precise.
Update maintainer for Ruby Trollop package
Merge pull request #49 from alphagov/64650014-ruby-trollop

[#64650014] Backport Ruby Trollop gem from Ubuntu Utopic to Precise