lib: move counter more_collections and poset to lib/

They may be useful to other, even if not really API-clean.

Signed-off-by: Jean Privat <jean@pryen.org>
modelbuilder: prevent names of formal type to have lowercases

fixes #97

Signed-off-by: Jean Privat <jean@pryen.org>
src: remove old style attributes in nitg-related clases

parser and lib remains

Signed-off-by: Jean Privat <jean@pryen.org>