According to the BeBook, it is NOT allowed to allocate one large
pool, instead the memory blocks must be allocated individually.
To achieve O(1) for both Save() and Get() function, only one list
of free blocks is maintained.
git-svn-id: file:///srv/svn/repos/haiku/trunk/current@4393 a95241bf-73f2-0310-859d-f6bbb57e9c96
