Bastian Kleineidam: the "build_scripts" command and changes

necessary to support it.

Details:
  - build command additionally calls build_scripts
  - build_scripts builds your scripts in 'build/scripts' and adjusts the
    first line if it begins with "#!" and ends with "python", optionally
    ending with commandline options (like -O, -t ...).  Adjusting means we
    write the current path to the Python interpreter in the first line.
  - install_scripts copies the scripts to the install_scripts dir
  - install_data copies your data_files in install_data. You can
    supply individual directories for your data_files:

    data_files = ['doc/info.txt', # copy this file in install_scripts dir
      ('testdata', ['a.dat', 'b.dat']), # copy these files in
                                        # install_scripts/testdata
      ('/etc', ['packagerc']),    # copy this in /etc. When --root is
                                  # given, copy this in rootdir/etc
    ]

    So you can use the --root option with absolute data paths.

Lib/distutils/command/install_data.py

@@ -7,17 +7,52 @@ platform-independent data files."""
 
 __revision__ = "$Id$"
 
-from distutils.cmd import install_misc
+import os
+from types import StringType
+from distutils.core import Command
 
-class install_data (install_misc):
+class install_data (Command):
 
     description = "install data files"
 
+    user_options = [
+        ('install-dir=', 'd',
+         "directory to install the files to"),
+        ('root=', None,
+         "install everything relative to this alternate root directory"),
+        ]
+
+    def initialize_options (self):
+        self.install_dir = None
+        self.outfiles = None
+        self.root = None
+        self.data_files = self.distribution.data_files
+
     def finalize_options (self):
-        self._install_dir_from('install_data')
+        self.set_undefined_options('install',
+	                           ('install_data', 'install_dir'),
+				   ('root', 'root'),
+				  )
 
     def run (self):
-        self._copy_files(self.distribution.data_files)
+        self.mkpath(self.install_dir)
+        for f in self.data_files:
+            if type(f) == StringType:
+                # its a simple file, so copy it
+                self.copy_file(f, self.install_dir)
+            else:
+                # its a tuple with path to install to and a list of files
+                dir = f[0]
+                if not os.path.isabs(dir):
+                    dir = os.path.join(self.install_dir, dir)
+                elif self.root:
+                    dir = os.path.join(self.root, dir[1:])
+                self.mkpath(dir)
+                for data in f[1]:
+                    self.copy_file(data, dir)
 
     def get_inputs (self):
-        return self.distribution.data_files or []
+        return self.data_files or []
+
+    def get_outputs (self):
+        return self.outfiles