Merge pull request #34 from diogodadalt/master

Changes in the management of registers and in the expression node
parte da alocação de endereços para variáveis...
Merge branch 'master' of http://github.com/lucaslazari/compiladores

Conflicts:
	etapa5/src/tree/common.h
	etapa5/src/tree/expression/identifiernode.cpp
	etapa5/src/tree/node.h
	etapa5/src/tree/programnode.cpp
Resolving conflicts