r11764: 2007-07-22 Kevin Rosenberg (kevin@rosenberg.net)

r11764: 2007-07-22 Kevin Rosenberg (kevin@rosenberg.net)
	* Version 1.6.0 (SPECIFICATION CHANGE)
	* doc/ref_func_libr.xml: Change the specification of
	load-foreign-library to better match the actual action of the
	function. Rather than returning NIL for failure to load library,
	signal an error.
	* src/libraries.lisp: Rework load-foreign-library to ensure errors
	are signaled on failure to load library. This was the case for
	some implementations, change the other implementations to
	match. (Inconsistency found due to Mark Wooding's remarks)