0.8.19.7:

0.8.19.7:
	SET-SYNTAX-FROM-CHAR fix
	... SET-SYNTAX-FROM-CHAR now copies the dispatch table if necessary.
	Customizeable reader fixes (PFD SYNTAX.FOO ansi-tests)
	... Better delineation between character syntax and character
		constituent trait;
	... rename SECONDARY-ATTRIBUTE to CONSTITUENT-TRAIT;
	... renumber +char-attr-multiple-escape+ to below
		+char-attr-consituent+;
	... rename ESCAPE to SINGLE-ESCAPE;
	... in token reader helper macros CHAR-CLASS<n>, get
		CONSTITUENT-TRAIT only if the character is a constituent.