Old logic did not consider memory held in the scratch cache to be
free when deciding whether or not to reclaim.
Change-Id: I7f7c7549c72d743edbf7c53489fe9a453dc4177a
Each SE must be assigned equal numbers of slots and slots
must be assigned in units of whole groups.
Change-Id: I8f3677237fa6f2e2d25e3e78210c5a7a0ad792f3