Rebalance responsibilities between PackageIndex, Installer, and main() so

that PackageIndex handles all downloading of any kind, Installers can be
reused for multiple packages, and main() manages temporary directories and
all communication between PackageIndex and Installer.  Also, change
run_setup to take an argument sequence, because later we will probably need
other arguments to control other aspects of run_setup's behavior.

--HG--
branch : setuptools
extra : convert_revision : svn%3A6015fed2-1504-0410-9fe1-9d1591cc4771/sandbox/trunk/setuptools%4041050

EasyInstall.txt

@@ -274,6 +274,23 @@ Known Issues
  * There's no automatic retry for borked Sourceforge mirrors, which can easily
    time out or be missing a file.
 
+0.4a2
+ * Use ``urllib2`` instead of ``urllib``, to allow use of ``https:`` URLs if
+   Python includes SSL support.
+
+ * All downloads are now managed by the ``PackageIndex`` class (which is now
+   subclassable and replaceable), so that embedders can more easily override
+   download logic, give download progress reports, etc.
+
+ * The ``Installer`` class no longer handles downloading, manages a temporary
+   directory, or tracks the ``zip_ok`` option.  Downloading is now handled
+   by ``PackageIndex``, and the latter two are now managed by ``main()``.
+
+ * There is a new ``setuptools.sandbox.run_setup()`` API to invoke a setup
+   script in a directory sandbox, and a new ``setuptools.archive_util`` module
+   with an ``unpack_archive()`` API.  These were split out of EasyInstall to
+   allow reuse by other tools and applications.
+
 0.4a1
  * Added ``--scan-url`` and ``--index-url`` options, to scan download pages
    and search PyPI for needed packages.

setuptools/sandbox.py

@@ -8,7 +8,7 @@ __all__ = [
 ]
 
 
-def run_setup(setup_script, *args):
+def run_setup(setup_script, args):
     """Run a distutils setup script, sandboxed in its directory"""
 
     old_dir = os.getcwd()