Added docstring, brought __all__ up-to-date.

Lib/distutils/command/__init__.py

-# this is solely for debugging convenience
+"""distutils.command
+
+Package containing implementation of all the standard Distutils
+commands.  Currently this means:
+
+  build
+  build_py
+  build_ext
+  install
+  install_py
+  install_ext
+
+but this list will undoubtedly grow with time."""
+
+__rcsid__ = "$Id$"
 
 __all__ = ['build',
            'build_py',
-           'make_blib',
+           'build_ext',
+           'install',
+           'install_py',
+           'install_ext',
           ]