Allow mod_tls and mod_ssl coexists without interfering each other by

renaming the --with-ssl option of mod_tls to --with-tls. This way we can
use --enable-ssl/--with-ssl for mod_ssl and --enable-tls/--with-tls for
mod_tls.


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@88999 13f79535-47bb-0310-9956-ffa450edef68