read the "use_ssl" property from ESource and form the uri accrodingly

read the "use_ssl" property from ESource and form the uri accrodingly

2004-07-23  Sivaiah Nallagatla <snallagatla@novell.com>

       * backends/groupwise/e-book-backend-groupwise.c
       (e_book_backend_groupwise_load_source) : read the "use_ssl"
       property from ESource and form the uri accrodingly
       (e_book_backend_groupwise_authenticate_user) : when "use_ssl" is
       "when-posible", try with https first and then http if that fails.
       (e_book_backend_groupwise_init) (e_book_backend_groupwise_dispose) :
       initialize and free the newly added priv member use_ssl