Various file comparison improvements

- Rename unchanged_file() to quick_check_ok().
- Enhance quick_check_ok() to work with non-regular files.
- Add a get_file_type() function to the generator.
- Use the new functions in the generator code to make the logic simpler.
- Fix a bug where the `--alt-dest` functions were not checking if a
  special file fully matched the non-permission mode bits before
  deciding if we have found an alt-dest match.
- Enhance the `--info=skip --ignore-existing` output to include extra
  info on if the existing file differs in type or passes the standard
  quick-check logic.
- Add `--info=skip2` that authorizes rsync to perform a slow checksum
  "quick check" when ignoring existing files. This provides the uptodate
  and differs info even if we need to checksum a file to get it.

1 files changed, 1 insertions, 1 deletions

diff --git a/options.c b/options.c
index 06f91098..9ffc3cf7 100644
--- a/options.c
+++ b/options.c
@@ -267,7 +267,7 @@ static struct output_struct info_words[COUNT_INFO+1] = {
 	INFO_WORD(NAME, W_SND|W_REC, "Mention 1) updated file/dir names, 2) unchanged names"),
 	INFO_WORD(PROGRESS, W_CLI, "Mention 1) per-file progress or 2) total transfer progress"),
 	INFO_WORD(REMOVE, W_SND, "Mention files removed on the sending side"),
-	INFO_WORD(SKIP, W_REC, "Mention files that are skipped due to options used"),
+	INFO_WORD(SKIP, W_REC, "Mention files that are skipped due to options used (levels 1-2)"),
 	INFO_WORD(STATS, W_CLI|W_SRV, "Mention statistics at end of run (levels 1-3)"),
 	INFO_WORD(SYMSAFE, W_SND|W_REC, "Mention symlinks that are unsafe"),
 	{ NULL, "--info", 0, 0, 0, 0 }