Add support for commit information in auto-generated archives.

This uses the tool to record the commit data from our previous commit,
and ensures that auto-generated archives from Github, for example,
always carry identifying information.

Ideas and code taken from Matthew Brett's tools in nibabel.

.gitattributes

@@ -0,0 +1,1 b''
+IPython/.git_commit_info.ini export-subst

IPython/.git_commit_info.ini

@@ -0,0 +1,9 b''
+# This is an ini file that may contain information about the code state
+[commit hash]
+
+# The line below may contain a valid hash if it has been substituted during
+# 'git archive'
+archive_subst_hash=$Format:%h$
+
+# This line may be modified by the install process
+install_hash=

MANIFEST.in

@@ -18,6 +18,7 b' graft IPython/scripts'
 graft IPython/testing
 graft IPython/utils
 
+include IPython/.git_commit_info.ini
 
 graft docs
 exclude docs/\#*

setup.py

@@ -6,12 +6,16 b' Under Posix environments it works like a typical setup.py script.'
 Under Windows, the command sdist is not supported, since IPython 
 requires utilities which are not available under Windows."""
 
-#-------------------------------------------------------------------------------
-#  Copyright (C) 2008  The IPython Development Team
+#-----------------------------------------------------------------------------
+#  Copyright (c) 2008-2010, IPython Development Team.
+#  Copyright (c) 2001-2007, Fernando Perez <[e-mail]>
+#  Copyright (c) 2001, Janko Hauser <[e-mail]>
+#  Copyright (c) 2001, Nathaniel Gray <[e-mail]>
 #
-#  Distributed under the terms of the BSD License.  The full license is in
-#  the file COPYING, distributed as part of this software.
-#-------------------------------------------------------------------------------
+#  Distributed under the terms of the Modified BSD License.
+#
+#  The full license is in the file COPYING.txt, distributed with this software.
+#-----------------------------------------------------------------------------
 
 #-----------------------------------------------------------------------------
 # Minimal Python version sanity check
@@ -55,7 +59,8 b' from setupbase import ('
     find_package_data, 
     find_scripts,
     find_data_files,
-    check_for_dependencies
+    check_for_dependencies,
+    record_commit_info,
 )
 
 isfile = os.path.isfile
@@ -239,6 +244,7 b' else:'
 # Do the actual setup now
 #---------------------------------------------------------------------------
 
+setup_args['cmdclass'] = {'build_py': record_commit_info('IPython')}
 setup_args['packages'] = packages
 setup_args['package_data'] = package_data
 setup_args['scripts'] = scripts

tools/make_tarball.py

@@ -9,7 +9,7 b' import shutil'
 
 from  toollib import *
 
-tag = commands.getoutput('git describe')
+tag = commands.getoutput('git describe --tags')
 base_name = 'ipython-%s' % tag
 tar_name = '%s.tgz' % base_name