libtoolize: update a bit-rotted comment.

* libtoolize (func_copy_cb): Since this comment was written, the
function has been changed to timestamp files as it copies.
Update the comment to reflect that.

Signed-off-by: Gary V. Vaughan <gary@gnu.org>

diff --git a/libtoolize.m4sh b/libtoolize.m4sh
index 9299a8cbb370943f16ec9e37488b5af89a8cb71c..bae97fc2ed3976bd1a81e8465091de34eea6d882 100644 (file)
--- a/libtoolize.m4sh
+++ b/libtoolize.m4sh
@@ -213,9 +213,10 @@ func_copy ()
 
 
 # func_copy_cb filename srcdir destdir [msg_var]
-# If option `--copy' was specified, or soft-linking SRCFILE to DESTFILE fails,
-# then try to copy SRCFILE to DESTFILE (without changing the timestamp if
-# possible).
+# If option `--copy' was specified, or soft-linking SRCFILE to DESTFILE
+# fails, then try to copy SRCFILE to DESTFILE (making sure to update the
+# timestamp so that a series of files with dependencies can be copied
+# in the right order that their timestamps won't trigger rebuilds).
 func_copy_cb ()
 {
     $debug_cmd