Added deprecation notes, in case anyone decides to read these anyway.
diff --git a/Doc/lib/libcmp.tex b/Doc/lib/libcmp.tex
index a30da72..4f81b3c 100644
--- a/Doc/lib/libcmp.tex
+++ b/Doc/lib/libcmp.tex
@@ -5,6 +5,9 @@
\sectionauthor{Moshe Zadka}{mzadka@geocities.com}
\modulesynopsis{Compare files very efficiently.}
+% XXX check version number before release!
+\deprecated{1.5.3}{Use the \module{filecmp} module instead.}
+
The \module{cmp} module defines a function to compare files, taking all
sort of short-cuts to make it a highly efficient operation.