clone() and exec() are not exactly like fork() and exec()

[egranata]

There are not-so-subtle differences between fork() and clone() and our exec() vs UNIX exec():

• fork() returns at the point of call and just gives out different return values for parent vs. child;

• clone() resumes the child at a whole new function;

• our exec() spawns a new process;

• UNIX exec() replaces the address space.

These will somehow need to be addressed in order for newlib to be ported properly

[egranata]

Apropos nothing... http://man7.org/linux/man-pages/man2/vfork.2.html