Start refectoring libutil
Class "Excecao" fully refactored to "Exception" class
Start refectoring of AtributosGlobais.
"AtributosGlobais" refactored to "GlobalAttributes"
Merge branch 'code-refactoring' of https://github.com/pgmodeler/pgmodeler into code-refactoring

Conflicts:
	libutil/src/atributosglobais.h
Start refectoring of AtributosParsers
AtributosParsers refactoring checkpoint.
Utility library (libutil) completely refactored.
Start refactoring database connection library. "libconexbd" now stands
for "libdbconnect"
Refactoring checktpoint. Class "Resultado" now stands for "ResultSet"
Class "Resultado" fully refactored to "ResultSet".
Start refactoring the class "ConexaoBD"
libconexbd fully refactored to libdbconnect
libparsers refactoring checkpoint. Class "ParserEsquema" fully
refactored to "SchemaParser"
Relationships now can be created without specifiyng the name on
constructs. The name is auto generated and can be modified later.
XMLParser refactoring checkpoint. Pending comments translation.
Parsers library (libparsers) fully refactored.
Start exception codes refectoring.
Exceptions codes refectoring checkpoint.
Exceptions codes refactoring checkpoint.
Exceptions codes refactoring done.