Uses the HTTPS url for cases where the existing URL has a permanent redirect. For each domain, at least one fixed derivation URL was downloaded to test the domain is properly serving downloads. Also fixes jbake source URL, which was broken.
jsoncpp: 1.6.5 -> 1.7.2 libjson_rpc_cpp: 0.2.1 -> 0.6.0 argtable: init at 3.0.1 libcpuid: init at 0.2.2