Install Misc/Makefile.pre.in in the config/ install directory.
Suggestion by Konrad Hinsen.
diff --git a/Makefile.in b/Makefile.in
index 3649626..129bff1 100644
--- a/Makefile.in
+++ b/Makefile.in
@@ -363,6 +363,7 @@
$(INSTALL_DATA) Modules/Setup.local $(LIBPL)/Setup.local
$(INSTALL_PROGRAM) $(srcdir)/Modules/makesetup $(LIBPL)/makesetup
$(INSTALL_PROGRAM) $(srcdir)/install-sh $(LIBPL)/install-sh
+ $(INSTALL_DATA) $(srcdir)/Misc/Makefile.pre.in $(LIBPL)/Makefile.pre.in
# Install the dynamically loadable modules
# This goes into $(exec_prefix)