manually touch atime when reading a mbox file

The only common use of atime left is local mail agents leaving a mark on
mbox file after the mail has been read.  And, since POSIX-2008, it is
possible to use futimens() to alter atime even on filesystems mounted with
noatime.

There's no extra cost for doing this on when atime updates are enabled:
the inode will be dirty already.

1 files changed, 6 insertions, 0 deletions

diff --git a/main.c b/main.c
index ebe27985..dcfb02b8 100644
--- a/main.c
+++ b/main.c
@@ -392,6 +392,12 @@ static void show_version (void)
 #else
 	"-HAVE_RESIZETERM  "
 #endif
+	
+#ifdef HAVE_FUTIMENS
+	"+HAVE_FUTIMENS  "
+#else
+	"-HAVE_FUTIMENS  "
+#endif
         );	
   
   puts (