Preven Net::FTPServer limits.

They lead to mysterious crashes.

lib/Bric/Changes.pod

@@ -70,6 +70,12 @@ report (Bug # 184). [David]
 Worked around a bug in L<Net::SSH2> where sockets weren't being closed,
 leading to L<bric_queued> running out of file descriptors. [David]
 
+=item *
+
+The virtual FTP server no longer limits itself, but leaves resource limits to
+the OS. This prevents apparently unrelated (and mysterious!) errors from the
+FTP server. [Alex Krohn].
+
 =back
 
 =head1 Version 2.0.0 (2010-04-12)

lib/Bric/Util/FTP/Server.pm

@@ -171,6 +171,17 @@ sub post_bind_hook {
         unless $> == SYS_USER;
 }
 
+=item process_limits_hook()
+
+Overrides FTP::Server's implementation to ensure no limits are set. Better to
+just let the OS set them.
+
+=cut
+
+sub process_limits_hook {
+    return 1;
+}
+
 sub find_workflow {
     my ($self, $site_id) = @_;
     my $user = $self->{user_obj};