Release of mod_authnz_external-3.2.4

[j...@unixpapa.com]

An new version of mod_authnz_external has been released. None of
these changes are particularly critical:

v3.2.4 (Jan Wolter - May 20, 2009)
-----------------------------------------------
* Dropped the radius code from the distribution, because of possible
problems
with it's license. Thanks to Hai Zaar for pointing out this
problem.
* Modified AuthExternal directive to be able to take more than one
authenticator name. If more than one is defined, then each
authenticator
is run in turn, until one succeeds or all have failed. Probably a
similar
change should be made to GroupExternal, but it hasn't been done yet
because
it's a more complex change and nobody has asked for it. Thanks to
Andreas
Ntaflos for suggesting this change.
* Inserted code to restore SIGCHLD to default before running the
authenticator. Sometime other modules (like php built with the
--enable-sigchild option) leave SIGCHLD messed up, which would
cause
problems with getting the return code back from authenticators. We
restore SIGCHLD to whatever state it was in originally after the
authenticator terminates. Thanks to Stefan Mehlhorn for reporting
this
problem and providing the help needed to diagnose it.
* Clean-up of handling of return codes from apr_proc_wait() to be
more
formally correct.