Dan Melomedman encouraged me to publish my patch for PHP with fnord and diet libc. I've also put the source code of a HTTP authentication module for fnord and a «small» (read: no features, just loading modules with or without options, nothing more, nothing less) insmod for Linux 2.5.x on the web.
P.S.: My patch for isakmpd on Linux 2.5.x was mentioned in a article by Ralf Spenneberg about IPsec in Linux 2.5.x. in the Linux-Magazin. There might also be a chapter about using isakmpd on Linux 2.5.x in Ralfs new book «VPN mit Linux».