+2007-09-28 Jim Meyering <jim@meyering.net>
+
+ Fix canonicalize loop-detection corner case.
+ Do not attempt to stat the symlink values stored via seen_triple.
+ Without this, coreutils' tests/misc/readlink-fp-loop test would fail
+ on linux-2.6.18, (but not 2.6.22).
+ * lib/canonicalize.c (seen_triple): Use triple_compare_ino_str, not
+ triple_compare. The former compares dev,ino,filename, while the latter
+ would actually stat dirname(filename) when dev and ino were equal.
+ * lib/hash-triple.c: Install <string.h>.
+ (STREQ): Define.
+ (triple_compare_ino_str): New function.
+ * lib/hash-triple.h (triple_compare_ino_str): Declare it.
+