0.6.12.36:

0.6.12.36:
	fixed DIRECTORY/TRUENAME/symlink failure as proposed by DB
		(sbcl-devel 2001-06-13, plus following discussion),
		mostly by tweaking UNIX-READ-LINKS
	In tweaking UNIX-READ-LINKS, I also redid it so that it would
		handle pathnames of any length.
	rewrote UNIX-READLINK to use wrapped_readlink(), handling
		paths of any length
	incompatible change: The old CMU-CL-style DIRECTORY options
		(:ALL, :FOLLOW-LINKS, and :CHECK-FOR-SUBDIRS) are no
		longer supported, so DIRECTORY always does the abstract
		Common-Lisp-y thing, i.e. :ALL T :FOLLOW-LINKS T
		:CHECK-FOR-SUBDIRS T.
	added some DIRECTORY and TRUENAME test cases
	fixed stupid gross errors in 0.6.12.35 test cases (Evidently I
		neglected to run them before..)