0.7.3.7:

0.7.3.7:
	More CLISP bootstrapping fixes:
	... #\f is the exponent marker for single-floats, not #\s, so
		s/*fp-constant-0s0*/*fp-constant-0f0*/ (and 1s0->1f0)
		use 0f0 rather than 0s0 in initializing them, in genesis,
		and in transformations
	... don't do possibly-destructive operations on possibly-read-only
		strings in genesis
	Now first genesis runs under clisp!