[fpc-pascal] FP Vector graphics library

[Marco van de Voort]

In our previous episode, Felipe Monteiro de Carvalho said:
> > - There are writeln's in several places. This will break Windows GUI (Darwin
> > ?too?) programs, and look sloppy on other systems.
> 
> I isolated them in ifdefs
> I removed the lazarus files, they aren't needed at all.
> 
> Another thing is about the dependencies, a single unit,
> "fpvtocanvas.pas" depends on fp-image, so the whole fpvectorial needs
> to depend on it too as a build requisite, but nothing from fp-image is
> used except in this unit, which has no other unit depending on it.

Yes. Our dependancies have package granularity. This avoids too much
micro-managing dependancies (which means effectively they are always out of
date). As long as it doesn't pull in unnecessary external dependancies, that
is not a problem.

Note that this is just a bunch of barren units. To make a decent package,
this needs to be done:

- Add to all units a decent copyright header WITH a description that is more
  descriptive than the unit name.
- Add an entry to the "packages list" lemma in the wiki
- examples, tests.