Revert: Partially revert unsigned to signed change in "Bugfix: Compilation/Portabilit...

Revert: Partially revert unsigned to signed change in "Bugfix: Compilation/Portability problems exposed when building against musl-libc.".

There were problems with the console parameter size, so switching that to signed seems fine.
However, switching the more general standard approach from unsigned to signed is more dangerous.
Signed operations are much more fickle when overflowing or when using bitwise operations.
In fact, the C standards leave a lot of this behavior as undefined.

Much of the logic used in operating and manipulating array lengths (as counters or with bitwise operations such as << or >>) is affected by the previous change from signed to unsigned.
Avoid these signed problems by reverting this behavario.
The console parameter length will remain as a signed.

see: 7199b83b9596855a9929d12e5942cc541c194b5f