- cleanup irp code
- unify error handling using the exit_with_error function
- ensure we add generated files
- checkin the newly created package

- move new tools into a subpackage ruby-packaging-helpers to avoid
dependency to /usr/bin/ruby

- Add 2 new utilities
- irp aka initialize ruby package
does exactly what the name says. does all the work to
initialize a new ruby package
- bundler-dumpdeps: script to generate BR/Requires based on a
Gemfile.