remove unmaintained documentation: developpez and nitreference

Signed-off-by: Jean Privat <jean@pryen.org>
nitunit: remove a deprecated TODO

Signed-off-by: Jean Privat <jean@pryen.org>
niti: add write_attribute as a unique entry point

Signed-off-by: Julien Pagès <julien.projet@gmail.com>
nitvm: clean the code and add some comments

Signed-off-by: Julien Pagès <julien.projet@gmail.com>
Merge: nitunit: remove a deprecated TODO

Pull-Request: #593
Reviewed-by: Lucas Bajolet <r4pass@hotmail.com>
Merge: remove unmaintained documentation: developpez and nitreference

Maybe things from `developpez` (form early 2011) could be updated an put on the website?

Pull-Request: #588
Reviewed-by: Alexandre Terrasa <alexandre@moz-code.org>
Reviewed-by: Lucas Bajolet <r4pass@hotmail.com>
nitvm: use perfect hashing for atribute access

Signed-off-by: Julien Pagès <julien.projet@gmail.com>
nitvm: fix a crash caused by a bad allocation of virtual tables

Signed-off-by: Julien Pagès <julien.projet@gmail.com>
Merge: Attributes access with perfect hashing in nitvm

Runtime structures for accessing attributes in objects of the source program are now calculated.
Attributes access in runtime objects of the virtual machine is now functionnal with perfect hashing.

And some changes to improve the code in vm.nit

Signed-off-by: Julien Pagès <julien.projet@gmail.com>

Pull-Request: #582
Reviewed-by: Jean Privat <jean@pryen.org>
Reviewed-by: Lucas Bajolet <r4pass@hotmail.com>