[fpc-pascal] dot within unit file name

[Marco van de Voort]

> - Can someone provide the grammar how an identifier looks like in Delphi?
> - How shall the compiler detect that "a.b" is an unit if a is also defined as a record that
> doesn't contain a field b?
> - How shall the compiler handle if "a.b.c" is an unit and a.b.c is class?
> 
> So please come with a design instead of just asking give me this feature in one line. Because if
> the feature was really important and simple it was for sure already implemented. The left over
> features are therefor not in the category simple anymore. Also important is debatable because
> we've already lived without them for years.

More over it should map one to one to what Delphi does, since it is a
compability item.

Also have a look at http://www.freepascal.org/faq.var#extensionselect for
how to do file a proper proposal.