Solution for E5: System Object Destruction.

git-svn-id: https://epos.lisha.ufsc.br/svn/branches/ine5424@3119 86035c5f-d46c-4136-a2d5-fe63f1d4a782
Auxiliary files to solve E6: Multiple, Specialized Heaps.

git-svn-id: https://epos.lisha.ufsc.br/svn/branches/ine5424@3120 86035c5f-d46c-4136-a2d5-fe63f1d4a782
Added .gitignore and directory workaround to professor's solution to E5.
Added .gitignore and directory workaround to auxiliary files to solve E6.