The contents of the platform specific packages are:
Solaris, Linux, AIX:
plug-ins/fastcgi/README
plug-ins/fastcgi/libfastcgi.so
plug-ins/fastcgi/Fastcgistub
HP-UX:
plug-ins/fastcgi/README
plug-ins/fastcgi/libfastcgi.sl
plug-ins/fastcgi/Fastcgistub
Windows:
plug-ins\fastcgi\README
plug-ins\fastcgi\fastcgi.dll
plug-ins\fastcgi\Fastcgistub.exe
The FastCGI plug-in is packaged as a tarball, a zip file, an SVR4 package, or an RPM as package.