var_declaration submachine

this sm calls sm tipo
pda seens to work
adding wirth description and automata of rules

only automata of rules not treated by lexer
adding wirth description and automata of rules

only automata of rules not treated by lexer
Merge branch 'master' of github.com:joao-sallaberry/compiladores
sm atribuicao
sm expressao
merge
fix build
sm expressao and its dependencies - not tested
corrected grammar and changed submachines to avoid ambiguity on sm calls
fixed sm termo_primario
sm retorno close #17
changed grammar and automata - sm instrucao close #21
sm condicional, close #19 - sm laco, close #20
sm declaracao var com atrib - closes #29
sm declaracao funcao, close #23

removed sm tipo
sm imprimir close #16
eliminate useless vars
Merge branch 'syntatic' of github.com:joao-sallaberry/compiladores into syntatic
remove rule imprimir from grammar - will be in stdlib