ansi-test corrections; extra-libs option to LINK function; LINK doc change; subtypep and string changes to pass more tests
Fixed problem string-capitalize.2; added tests for nstring-upcase, nstring-downcase, and nstring-capitalize.
Modified so that instead of using EQUALP, uses EQUALP-WITH-CASE (which is kind of like EQUALP but preserves case in comparison of characters.)
Added randomized tests for REMOVE, REMOVE-IF, REMOVE-IF-NOT, DELETE, DELETE-IF, DELETE-IF-NOT. Added tests for :KEY NIL bug in the last five of these functions.