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.

alias with the old name for backwards compatibility.  Per discussion,
the old name is actively wrong because validity and well-formedness
have different meanings in XML.

by David Fetter