Use rubygem(foo) or rubygem-foo

[Josef Stribny]

Hi,

> rubygem(typical_file_you_should_require) seems much harder to implement,
> as far as I remember once python packages tried to do this, however it
> gave up. I think we can start with what may be implemented easier.

then if rubygem(foo) and rubygem-foo shall be equivalent I would
rather see an agreement that we will recommend to use only one of those.