Patch derived from Trent's 101162: a Python/C API testing framework.
STILL NEEDS UNIX BUILD CHANGES.
diff --git a/Lib/test/test_capi.py b/Lib/test/test_capi.py
new file mode 100644
index 0000000..8b39829
--- /dev/null
+++ b/Lib/test/test_capi.py
@@ -0,0 +1,16 @@
+# Run the _test module tests (tests for the Python/C API):  by defn, these
+# are all functions _test exports whose name begins with 'test_'.
+
+import sys
+import test_support
+import _test
+
+for name in dir(_test):
+    if name.startswith('test_'):
+        test = getattr(_test, name)
+        if test_support.verbose:
+            print "internal", name
+        try:
+            test()
+        except _test.error:
+            raise test_support.TestFailed, sys.exc_info()[1]