Change "deslocamento" to work with stack

Include struct in the header.
Include function to work with stack.
Change way to acess functions in the part
syntatic.

Signed-off-by: Gustavo Toshi Komura <gtk10@c3sl.ufpr.br>
Correct way to read function with type of return

Signed-off-by: Gustavo Toshi Komura <gtk10@c3sl.ufpr.br>
Correct way to set "deslocamento" and "nivel lexico"

Signed-off-by: Gustavo Toshi Komura <gtk10@c3sl.ufpr.br>
Update test to check new way to set "deslocamento"

Signed-off-by: Gustavo Toshi Komura <gtk10@c3sl.ufpr.br>
Execute make

Signed-off-by: Gustavo Toshi Komura <gtk10@c3sl.ufpr.br>