Added encodings to the LIBSUBDIRS variable, so that they get installed.
Noted by Michael Hudson.
diff --git a/Makefile.in b/Makefile.in
index 3a01763..59e082c 100644
--- a/Makefile.in
+++ b/Makefile.in
@@ -289,7 +289,7 @@
 # Install the library
 PLATDIR=	plat-$(MACHDEP)
 MACHDEPS=	$(PLATDIR)
-LIBSUBDIRS=	lib-old lib-tk test test/output $(MACHDEPS)
+LIBSUBDIRS=	lib-old lib-tk test test/output encodings $(MACHDEPS)
 libinstall:	python $(srcdir)/Lib/$(PLATDIR)
 		@for i in $(SCRIPTDIR) $(LIBDEST); \
 		do \