New command -- install_ext to install extension modules.

Lib/distutils/command/install_ext.py

+"""install_ext
+
+Implement the Distutils "install_ext" command to install extension modules."""
+
+# created 1999/09/12, Greg Ward
+
+__rcsid__ = "$Id$"
+
+from distutils.core import Command
+from distutils.util import copy_tree
+
+class InstallExt (Command):
+
+    options = [('dir=', 'd', "directory to install to"),
+               ('build-dir=','b', "build directory (where to install from)"),
+              ]
+
+    def set_default_options (self):
+        # let the 'install' command dictate our installation directory
+        self.dir = None
+        self.build_dir = None
+
+    def set_final_options (self):
+        self.set_undefined_options ('install',
+                                    ('build_platlib', 'build_dir'),
+                                    ('install_site_platlib', 'dir'))
+
+    def run (self):
+        self.set_final_options ()
+
+        # Dump the entire "build/platlib" directory (or whatever it really
+        # is; "build/platlib" is the default) to the installation target
+        # (eg. "/usr/local/lib/python1.5/site-packages").  Note that
+        # putting files in the right package dir is already done when we
+        # build.
+        outfiles = self.copy_tree (self.build_dir, self.dir)
+
+# class InstallExt