Rename module hash-triple-simple to hashcode-named-file. * lib/hashcode-named-file.c: Renamed from lib/hash-triple-simple.c. * modules/hashcode-named-file: Renamed from modules/hash-triple-simple. * lib/hash-triple.h: Update. * modules/canonicalize (Depends-on): Update. * modules/file-set (Depends-on): Update. * modules/hash-triple (Depends-on): Update. * NEWS: Mention the change.