provided by Andrew.

avoid this problem in the future.)

	remove transactions
	use create or replace function
	make formatting consistent
	set search patch on first line

Add documentation on modifying *.sql to set the search patch, and
mention that major upgrades should still run the installation scripts.

Some of these issues were spotted by Tom today.

hard-to-maintain textual examples currently in the SGML docs.  From
Sergey Karpov.