Revision 1775248

* SConstruct: Check for X509_STORE wrapper functions and provide
    SERF_NO_SSL_X509_STORE_WRAPPERS.

* buckets/ssl_buckets.c: Provide custom X509_STORE_get0_param() macro
   if SERF_NO_SSL_X509_STORE_WRAPPERS is defined, instead of basing
   this decision off of OPENSSL_VERSION_NUMBER.