Make it behave correctly when there are more than two tables being
joined, also.  Update regression test expected outputs.

 Reported by Adrian Oboroc <aoboroc@btr.md>.

mappings.  In fact, it had them backward because it was using the 6.5.*
code.  Copied them from parser/gram.y, so it is fixed now.  Looks like
our first 7.0.1 fix.  Oops, seems Tom has beat me to it as I was typing
this.

It's still pretty fundamentally bogus :-(.
Freebie side benefit: ALTER TABLE RENAME works on indexes now.

loading new data, for consistency with its handling of pg_shadow.

Thanks
Andreas

to need this updatepgproc.sql script after all...

Rearrange handling of VACUUMs so that they are certain to be executed
as superuser not some random user; also, do not forget to vacuum
template1 itself.

failure of rename() call.

available C++ header files.

postgres.