[DEV][add] Change stack/queue sizes to 8192*8

Also fix merge conflict on Makefile

Note:
Everything thus far is a mix of static and dynamic allocations.
It wouldn't cost much performance-wise to dynamically allocate
queues and stacks at creation and a reallocate later if they get
filled.

A strategy could consist of growing at 80% and shrinking at 25%,
in the background.
[DEV][fix] Format for size_t is %zu
[DEV][fix] Remove unused Makefile lines
[DEV][clean] Free in the same layer as calloc

Didn't really make sense to free at the layer below. Also allows
to always return SUCCESS since all cases are properly handled.