Bug#854257: netsurf must use OpenSSL 1.0.2 in stretch

[Adrian Bunk]

Source: netsurf
Version: 3.6-3
Severity: serious
Control: block 827061 by -1

Due to the SSL_CTX usage in netsurf/content/fetchers/curl.c
(it is passed to curl_easy_setopt()), netsurf must use
OpenSSL 1.0.2 in stretch since curl is using 1.0.2