Solution for P1: Arquitetura built-in.

git-svn-id: https://epos.lisha.ufsc.br/svn/branches/ine5424@3238 86035c5f-d46c-4136-a2d5-fe63f1d4a782
Added git workarounds to professor's solution for P1 (built-in architecture).
Merged professor's solution to ours.
Most of the code comes unaltered from professor's solution,
but we kept our class organization for class Task.