! Yet more Postgres fixes (including fixing stuff I inadvertantly broke in #1004).

Signed-off-by: Michael Eshom <oldiesmann@oldiesmann.us>
! Final Postgres fixes (no lengths on numeric columns and work around an annoying issue with adding NOT NULL columns without default values to existing tables)...

Signed-off-by: Michael Eshom <oldiesmann@oldiesmann.us>
Merge pull request #1007 from Oldiesmann/release-2.1

! Final Postgres fixes