autoconf's AC_CHECK_LIB automatically sets HAVE_LIBSSL, whereas HAVE_SSL has to be set manually. This prepares us to remove some code from configure.
git-svn-id: svn://svn.code.sf.net/p/bitchx/code/tags/ircii-pana-1.1-final@1 13b04d17-f746-0410-82c6-800466cd88b0