[svn r21283] Add a PIP_SKIP_REQUIRMENTS_REGEX hidden setting.  Add detection of the project name for -e svn links, based on guessing the name from te URL

[svn r21281] Added support for some hidden settings, PIP_LOG_EXPLICIT_LEVELS and PIP_DEFAULT_VCS, for backward compatibility with poacheggs

  - minor edits to docs

[svn r21132] Fixed --upgrade when a package is already installed (before it would not upgrade installed packages, even though it would download and appear to install them).  Put install-record-X.txt in the right location on Windows (#7)

[svn r21071] Make sure .egg-info/ directories end up in pybundles.  Exclude some internal files (like pip-egg-info/) from pybundles.  Fix case when you install an svn location, that it won't go into a bundle because it is put in a temporary location (now it is moved to a permanent location once its name is known).  Put in pip help and summaries.  Try to be a little quieter/less redundant about link detection.  Make pip bundle work