Add release note about the new MD5 validation feature.

--HG--
branch : setuptools
extra : convert_revision : svn%3A6015fed2-1504-0410-9fe1-9d1591cc4771/sandbox/trunk/setuptools%4041220

EasyInstall.txt

@@ -678,6 +678,9 @@ Known Issues
    rate don't expect it to work with all packages.
 
 0.6a1
+ * EasyInstall now does MD5 validation of downloads from PyPI, or from any link
+   that has an "#md5=..." trailer with a 32-digit lowercase hex md5 digest.
+
  * Added support for handling MacOS platform information in ``.egg`` filenames,
    based on a contribution by Kevin Dangoor.  You may wish to delete and
    reinstall any eggs whose filename includes "darwin" and "Power_Macintosh",