What do you mean the server it has to run on does not support it? If a shared library is not installed, you can just build your project with the library statically linked in.
Alternatively, compile a shared library of libevent and include it with your application. I have had success using the RUNPATH headers in ELF binatries and shared libraries to put an application directory at the beginning of the dynamic library loading search path.
https://github.com/wavetossed/pybuild is an example of a build script for Python 2.7.2 and a couple dozen binary modules, which includes using libevent. Building just a single library using RUNPATH is much simpler.