BUG #6530: intarray documentation could do with a warning about operators

The following bug has been logged on the website:

Bug reference: 6530
Logged by: Kasper Sandberg
Email address: kontakt(at)sandberg-consult(dot)dk
PostgreSQL version: 9.1.3
Operating system: Debian squeeze
Description:

Hello.

I recently had a problem with array operators && and @> on my gin index, it
failed. Friendly people on #postgresql helped me track down the root cause -
intarray, which i had just imported into my schema. I think it would be nice
if the documentation for intarray on the documentations page had a short
warning about this, so people can import into other schemas if they need to
use the default array operators.

Thanks.