Add loop.c -- a test program for repeatedly calling Py_Initialize()
and Py_Finalize().  It seems to dump core right now...
diff --git a/Demo/embed/README b/Demo/embed/README
index 8858c71..a0f7af8 100644
--- a/Demo/embed/README
+++ b/Demo/embed/README
@@ -10,3 +10,10 @@
 2) change the variables that together define the list of libraries
 (MODLIBS, LIBS, SYSLIBS) to link with, to match their definitions in
 $(blddir)/Modules/Makefile
+
+An additional test program, loop.c, is used to experiment with memory
+leakage caused by repeated initialization and finalization of the
+interpreter.  It can be build by saying "make loop" and tested with
+"make looptest".  Command line usage is "./loop <python-command>",
+e.g. "./loop 'print 2+2'" should spit out an endless number of lines
+containing the number 4.