Add imaplib to appropriate lists.
diff --git a/Doc/Makefile b/Doc/Makefile
index fcac619..83be111 100644
--- a/Doc/Makefile
+++ b/Doc/Makefile
@@ -168,7 +168,7 @@
     libuserdict.tex libdis.tex libxmllib.tex libqueue.tex \
     liblocale.tex libbasehttp.tex libcopyreg.tex libsymbol.tex libtoken.tex \
     libframework.tex libminiae.tex libbinhex.tex libuu.tex libsunaudio.tex \
-    libfileinput.tex
+    libfileinput.tex libimaplib.tex
 
 # Library document
 lib.dvi: tools/indfix.py $(LIBFILES)