2.016.2: Enhancements for MCL pathname and logical-pathname users.
Major change for RMCL: location strings are now POSIX namestrings. Major change for logical pathnames: they are now preserved by source-registry; the price is that only logical pathnames for which merging the name and type commutes with truename will be found by directory-files and subdirectories. Minor change for GCL: dropped kluges for 2.6, which never was working. Simplifications in internals of (implementation-identifier). Removed *system-cache* and get-uid, which never were working right (bad attempts at allowing common-lisp-controller compatibility, but it only ever was but a giant gaping security hole in the waiting). Simplified resolve-relative-location-component (ugly because it was written before MERGE-PATHNAMES*). Updated documentation about the file location DSL.
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