FWIW, in hindsight, this never should have been called pluggable storage, but rather pluggable table access methods, or at least pluggable table storage. But i

FWIW, in hindsight, this never should have been called pluggable storage, but rather pluggable table access methods, or at least pluggable table storage. But it was was in the subject on the first thread this patchset originated in (by Alvaro Herrera), and stuck... At least the code doesn't call it pluggable storage...