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.
Conflicts: pkgs/applications/networking/mailreaders/sup/default.nix pkgs/development/compilers/ghc/7.8.3-binary.nix pkgs/development/interpreters/php/5.3.nix pkgs/development/interpreters/ruby/patches.nix pkgs/development/libraries/cairo/default.nix pkgs/development/libraries/poppler/default.nix pkgs/top-level/all-packages.nix