Mark the mpz module deprecated as of Python 2.2.
diff --git a/Doc/lib/libmpz.tex b/Doc/lib/libmpz.tex
index e19ee56..2366668 100644
--- a/Doc/lib/libmpz.tex
+++ b/Doc/lib/libmpz.tex
@@ -6,6 +6,12 @@
precision arithmetic.}
+\deprecated{2.2}{See the references at the end of this section for
+ information about packages which provide similar
+ functionality. This module will be removed in Python
+ 2.3.}
+
+
This is an optional module. It is only available when Python is
configured to include it, which requires that the GNU MP software is
installed.