Disk block management has been kludged

[William la Forge]

For the moment we have a kludged up disk block management. Space which is released is simply dropped in the bit bucket. I'll note that the kernel b-trees are also a kudge, as they simply use the code from TreeMapContainerComponent.

But having kudged these two items, we can proceed with defining and implementing the kernel level API, and even do some [very!] limited testing.

Bill