[GC] Deal with the fallout from r19570.  Changing the size of a structure allocated from a memory pool means changing the number of structures you can allocate from that pool.
[GC] Deal with the fallout from r19570.  Changing the size of a structure allocated from a memory pool means changing the number of structures you can allocate from that pool.

Instead of tweaking this value depending on the size of the structures, assume a desirable fixed pool size and rebalance the number of structures at compile time, based on their size.

Yes, there is some black magic behind my reasoning here.

git-svn-id: 6e74a02f85675cec270f5d931b0f6998666294a3@19850 d31e2699-5ff4-0310-a27c-f18f2fbe73fe

ashgti/parrot,ashgti/parrot,ashgti/parrot,ashgti/parrot,ashgti/parrot,ashgti/parrot,ashgti/parrot