Set the warn_dir option to 0 before running the install command.

This suppresses bogus warnings about modules installed into a directory
not in sys.path.

Bugfix candidate.

Lib/distutils/command/bdist_dumb.py

@@ -81,6 +81,7 @@ class bdist_dumb (Command):
         install = self.reinitialize_command('install', reinit_subcommands=1)
         install.root = self.bdist_dir
         install.skip_build = self.skip_build
+        install.warn_dir = 0
 
         self.announce("installing to %s" % self.bdist_dir)
         self.run_command('install')

Lib/distutils/command/bdist_wininst.py

@@ -98,6 +98,7 @@ class bdist_wininst (Command):
         install = self.reinitialize_command('install')
         install.root = self.bdist_dir
         install.skip_build = self.skip_build
+        install.warn_dir = 0
 
         install_lib = self.reinitialize_command('install_lib')
         # we do not want to include pyc or pyo files