New test for generic Makefile.pre.in

diff --git a/Demo/extend/README b/Demo/extend/README
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+++ b/Demo/extend/README
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+This directory contains a test and demonstration of the power of the
+generic Makefile.pre.in from the Misc directory.  There are three
+shell scripts.  Study the source of the scripts to find out how they
+work (it's really easy).
+
+./make_static  Make a static python binary with the xx module
+               linked in.  To test this, run ./python and try to
+               import xx.
+
+./make_shared  Make a shared module xx.  To test this, run the
+               standard python interpreter in this directory and try
+               to import xx.
+
+./make_clean   Clean up after either of the above.  Note that each
+               scripts starts by calling this script, to begin with a
+               clean slate.

diff --git a/Demo/extend/make_clean b/Demo/extend/make_clean
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+++ b/Demo/extend/make_clean
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+#! /bin/sh
+
+# Reset the directory contents.
+
+rm -f Setup* Makefile* *.c *.o *.a *.so *~ python sedscript

diff --git a/Demo/extend/make_shared b/Demo/extend/make_shared
new file mode 100755 (executable)
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+++ b/Demo/extend/make_shared
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+#! /bin/sh
+
+# This script tests and demonstrates the mechanism for building a
+# shared library for an additional extension module using the
+# generic Makefile.pre.in from the Misc directory.
+
+./make_clean
+
+cp ../../Misc/Makefile.pre.in .
+cp ../../Modules/xxmodule.c .
+echo '*shared*' >Setup.in
+echo xx xxmodule.c >>Setup.in
+
+make -f Makefile.pre.in boot
+make Makefile
+make

diff --git a/Demo/extend/make_static b/Demo/extend/make_static
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+++ b/Demo/extend/make_static
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+#! /bin/sh
+
+# This script tests and demonstrates the mechanism for building a
+# static Python binary with an additional extension module using the
+# generic Makefile.pre.in from the Misc directory.
+
+./make_clean
+
+cp ../../Misc/Makefile.pre.in .
+cp ../../Modules/xxmodule.c .
+echo xx xxmodule.c >Setup.in
+
+make -f Makefile.pre.in boot
+make Makefile
+make static