Patch from Peter Waller: Prevent 'pip bundle' from trying to copy the package to the build-bundle twice.

patch_issue_68.patch

# HG changeset patch -- Bitbucket.org
# Project pip
# URL https://bitbucket.org/pwaller/pip/overview
# User Peter Waller <peter.waller@gmail.com>
# Date 1290443993 -3600
# Node ID 4ab07b7bde7886d5e1021d8ae7723bd3137fb3e7
# Parent  69b27453590266fca0706cef63569397b114e8e2
Prevent 'pip bundle' from trying to copy the package to the build-bundle twice.

--- a/pip/req.py
+++ b/pip/req.py
@@ -947,6 +947,7 @@ class RequirementSet(object):
                             #@@ sketchy way of identifying packages not grabbed from an index
                             if bundle and req_to_install.url:
                                 self.copy_to_build_dir(req_to_install)
+                                install = False
                 if not is_bundle and not self.is_download:
                     ## FIXME: shouldn't be globally added:
                     finder.add_dependency_links(req_to_install.dependency_links)