1.6 Note – Second Version

This is an incremental improvement on the first release, from yesterday. It does more intelligent detection of constants that can have multiple names on different systems, almost eliminating the use of #+ feature-checks in unixint.lisp. It also has a new subsystem for figuring out how to access errno, tested on our development platforms. The main purpose of the release is for our generous testers to check that errno and path-max work for them.