New release 5.2.0

New release 5.2.0
	* Version 5.2.0
	* db-odbc/odbc-api.lisp: Change from SBCL-specific
	to UFFI version of octets-to-strings. Reported by
	Daniel Brunner <daniel@dbrunner.de>
	* sql/oodml.lisp: Apply patch from Rupert Swarbrick
	<rswarbrick@gmail.com>: Fix behaviour with auto-inc
	primary keys.
	* sql/expressions.lisp, tests/test-syntax.lisp: Apply
	patch from Russ Tyndall	to quote identifiers with space
	or special character.