#52 There are Warnings and Hints during the build

[Leonel Togniolli]

There are many warnings and hints during the build of
all modules. These warnings could be caused by
conversion errors or already exist on the original
code: in any case, they should be fixed.

If the original code is changed to fix a hint or a
warning, a comment should be added marking it as such.
No functionality should be changed by this.