Revert "Disable the embedding test on MacOS-X to get the builds green again....

Revert "Disable the embedding test on MacOS-X to get the builds green again. Too many PRs depend on the travis tests to give a green light."

This reverts commit 1c947de7.

runtests.py

@@ -661,9 +661,7 @@ class TestBuilder(object):
                     continue
                 suite.addTest(
                     self.handle_directory(path, filename))
-        if (sys.platform not in ['win32'] and self.add_embedded_test
-                # the embedding test is currently broken in Py3.8+, except on Linux.
-                and (sys.version_info < (3, 8) or sys.platform != 'darwin')):
+        if sys.platform not in ['win32'] and self.add_embedded_test:
             # Non-Windows makefile.
             if [1 for selector in self.selectors if selector("embedded")] \
                     and not [1 for selector in self.exclude_selectors if selector("embedded")]: