Clean up the mod_tls configure process. This should remove most, if not all, of the hand-editing required to make mod_tls compile. I have also updated the README to reflect the current process. I have also noted that we require OpenSSL 0.9.6 to compile. I am getting all sorts of warnings from the OpenSSL header files, and I get a single error from the OpenSSL libraries, but I am assuming that is a problem with my configuration, not the mod_tls code.