ECL-15.2.21 -> ECL-15.3.7 regressions

asdf-contrib asdf-encodings-test lambda-reader-8bit

https://common-lisp.net/project/cl-test-grid/ecl/ecl-diff-9-lisp-to-c.html

https://common-lisp.net/project/cl-test-grid/ecl/ecl-diff-9-bytecode.html