Added deprecation notes, in case anyone decides to read these anyway.

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.
 

Doc/lib/libcmpcache.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{cmpcache} module provides an identical interface and similar
 functionality as the \refmodule{cmp} module, but can be a bit more efficient
 as it uses \function{statcache.stat()} instead of \function{os.stat()}