Add the upload command. Make all dist commands register their
outputs with the distribution object.
diff --git a/Lib/distutils/command/upload.py b/Lib/distutils/command/upload.py
new file mode 100644
index 0000000..d14f177
--- /dev/null
+++ b/Lib/distutils/command/upload.py
@@ -0,0 +1,4 @@
+"""distutils.command.upload
+
+Implements the Distutils 'upload' subcommand (upload package to PyPI)."""
+