* modules/ssl/ssl_engine_vars.c (ssl_var_lookup_ssl_cert_remain): New

function.  (ssl_var_lookup_ssl_cert): Support _V_REMAIN suffix for
SSL_{SERVER,CLIENT} as number of days until certificate expires.

* modules/ssl_engine_kernel.c: Export SSL_CLIENT_V_REMAIN if
+StdEnvVars is configured.


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk/modules/ssl@104700 13f79535-47bb-0310-9956-ffa450edef68