Re: Range Types

Updated patch.

Changes:
* Addressed Erik's review comments.
* Fixed issue with "range @> elem" found by Erik.
* Merged with latest HEAD
* Changed representation to be more efficient and more robust
(could use some testing though, because I just did this tonight)

TODO:
* send/recv -- just noticed this tonight, no reason not to do it

Open Items:
* Maybe typmod
* grammar -- ask for btree opclass, or compare function?
* catalog -- store btree opclass, or compare function?
* should non-superusers be able to create range types?
* constructor issues I just posted about
* SQL length function --immutable/stable/volatile?

As always, my repo is here:

http://git.postgresql.org/gitweb?p=users/jdavis/postgres.git;a=log;h=refs/heads/rangetypes

Regards,
Jeff Davis