nitc: renamed --no-check-initialization in --no-check-attr-isset to follow the new specification of nullable attributes

Signed-off-by: Alexandre Terrasa <alexandre@moz-code.org>
nitc: add option --count-isset-checks to count all compiled isset checks on non-nullable attributes

Signed-off-by: Alexandre Terrasa <alexandre@moz-code.org>
benches: add benches about nullables things

Signed-off-by: Alexandre Terrasa <alexandre@moz-code.org>
Merge: Benchs nullables

Allow us to compare engine performances with or without isset-checks before non-nullable attribute accesses

Pull-Request: #419
Reviewed-by: Jean Privat <jean@pryen.org>
Reviewed-by: Alexis Laferrière <alexis.laf@xymus.net>
Reviewed-by: Lucas Bajolet <r4pass@hotmail.com>