will be kept after installation completes.  Added an "installation report"
that tells you how to use 'require()' to activate a particular package
version.  Installer.install_eggs() now returns a list of Distribution
objects for the eggs it found and installed, so that the command-line tool
can print an installation report for each one.

--HG--
branch : setuptools
extra : convert_revision : svn%3A6015fed2-1504-0410-9fe1-9d1591cc4771/sandbox/trunk/setuptools%4041031