Copy over PEP 4 reasoning for why modules should be removed.

pep-3108.txt

@@ -69,7 +69,8 @@ Previously deprecated
 ---------------------
 
 PEP 4 lists all modules that have been deprecated in the stdlib
-(including motivation as to why) [#pep-0004]_.  All modules listed
+[#pep-0004]_.  The specified motivations mirror those listed in
+PEP 4. All modules listed
 in the PEP at the time of the first alpha release of Python 3.0 will
 be removed.
 
@@ -79,30 +80,61 @@ distribution for Python for users that rely upon the code.
 
 * buildtools
 
+    + Documented as deprecated since Python 2.3 without an explicit
+      reason.
+
 * cfmfile
 
+    + Documented as deprecated since Python 2.4 without an explicit
+      reason.
+
 * cl
 
+    + Documented as obsolete since Python 2.0 or earlier.
+    + Interface to SGI hardware.
+
 * md5
 
+    + Supplanted by the ``hashlib`` module.
+
 * mimetools
 
+    + Documented as obsolete without an explicit reason.
+
 * MimeWriter
 
+    + Supplaned by the ``email`` package.
+
 * mimify
 
+    + Supplanted by the ``email`` package.
+
 * multifile
 
+    + Supplanted by the ``email`` package.
+
 * posixfile
 
+    + Locking is better done by ``fcntl.lockf()``.
+
 * rfc822
 
+    + Supplanted by the ``email`` package.
+
 * sha
 
+    + Supplanted by the ``hashlib`` package.
+
 * sv
 
+    + Documented as obsolete since Python 2.0 or earlier.
+    + Interface to obsolete SGI Indigo hardware.
+
 * timing
 
+    + Documented as obsolete since Python 2.0 or earlier.
+    + ``time.clock()`` gives better time resolution.
+
 
 Platform-specific with minimal use
 ----------------------------------