Log Message:
Updated www/ap22-authnz-external to 3.2.1

 * Added AuthExternalContext directive, which defines a string that will be
   passed to the authenticator in the CONTEXT environment variable.  This can
   be set from the .htaccess file or the <Directory> block to give slightly
   different behavior from the same authenticator in different directories.
   Thanks to Olivier Thauvin <nanardon at mandriva dot org> for this patch.
 * Rewrite external authenticator launching code to use Apache's cross-OS
   process/thread library instead of directly calling Unix functions.
   Theoretically this should get us much closer to being usable on non-
   Unix platforms.
 * Support alternate syntax for configuration, using DefineAuthExternal and
   DefineAuthGroup commands.
 * More detailed error logging.
 * Much cleanup of documentation.