0.7.2.4:

0.7.2.4:
	merged NJF DEFINE-SYMBOL-MACRO patch sbcl-devel 2002-03-23
	tweaked patch...
	...removed "DEFINE-SYMBOL-MACRO" from
		defun-load-or-cload-xcompiler.lisp (on the theory that
		since SBCL doesn't use DEFINE-SYMBOL-MACRO itself, we
		don't need to mess with cross-compiling it and so can
		make the xcompiler simpler)
	...updated MACROEXPAND-1 to handle symbol macros
	...tweaked ECASE in EVAL to handle :MACRO case
	removed related entries in clocc-ansi-test-known-bugs.lisp
	bumped +FASL-FILE-VERSION+ since the new INFO :VARIABLE
		:MACRO-EXPANSION code probably displaces other codes,
		possibly causing stored code to be broken