make(1): use loops instead of Lst_ForEach for propagating to cohorts

For one-liners, Lst_ForEach creates a lot of overhead, both at runtime
and for reading and understanding the code.

In this simple case where the structure of the traversed nodes is not
modified, a simple loop is enough.  This avoids a lot of conversions to
void * and thus prevents type mistakes.

(rillig)