Something optimizes out empty files and breaks the tests. Put something in.

Examples/python/import_packages/split_modules/README

@@ -12,3 +12,6 @@ vanilla        # "plane Jane" module both halves in pkg1
 vanilla_split  # python 1/2 in pkg1 C 1/2 in global namespace
 builtin        # both halves in pkg1 (-builtin passed to swig)
 builtin        # python 1/2 in pkg1 C 1/2 in global namespace (with -builtin)
+
+  All of the _nopy3 tests are the same as the above except swig will not
+use -py3 for python3.

Examples/python/import_packages/split_modules/builtin/pkg1/__init__.py

@@ -0,0 +1 @@
+# killroy was here

Examples/python/import_packages/split_modules/builtin_nopy3/pkg1/__init__.py

@@ -0,0 +1 @@
+# killroy was here

Examples/python/import_packages/split_modules/builtin_split/pkg1/__init__.py

@@ -0,0 +1 @@
+# killroy was here

Examples/python/import_packages/split_modules/builtin_split_nopy3/pkg1/__init__.py

@@ -0,0 +1 @@
+# killroy was here

Examples/python/import_packages/split_modules/vanilla/pkg1/__init__.py

@@ -0,0 +1 @@
+# killroy was here

Examples/python/import_packages/split_modules/vanilla_nopy3/pkg1/__init__.py

@@ -0,0 +1 @@
+# killroy was here

Examples/python/import_packages/split_modules/vanilla_split/pkg1/__init__.py

@@ -0,0 +1 @@
+# killroy was here

Examples/python/import_packages/split_modules/vanilla_split_nopy3/pkg1/__init__.py

@@ -0,0 +1 @@
+# killroy was here