object being allocated, rather than the name of the free list, as an
argument (with the name of the free list constructed from the name of
the type), and add macros to define and declare the free list, also
taking the type of the object being allocated.
svn path=/trunk/; revision=11305
when adding them to the free list, cast the pointer to the structure to
a pointer to a "freed_item_t" which contains the "next" pointer.
This reduces the memory requirement for some of those structures, and
leaves us free to slab-allocate structures that have a "next" pointer
for other reasons.
svn path=/trunk/; revision=9150
Guy Harris