0.7.2.15:

0.7.2.15:
	tweaks to make DESCRIBE prettier...
	...used PPRINT-NEWLINE instead of FRESH-LINE, since mixing
		physical FRESH-LINE with pretty-printing operations
		leads to weird ugliness
	...deleted unused *DESCRIBE-INDENTATION-STEP*
	tweaks to make the debugger prettier...
	...replaced output in the style
		#<SB-DEBUG::UNPRINTABLE-OBJECT unavailable argument>
		with output in the style #<unavailable argument>, since
		I now realize that although following the #<TYPE ...>
		style of output is a good general rule, it's not as
		important as conciseness in placeholder values that
		no one but a crazed guru will ever want to look at
		anyway