Update to 1.36.0-0, and support building on EPEL 8
    
    Upstream's 1.36.0-0 release has fixes that make it backward-compatible with all versions of libuv down to 1.0.0, which makes it easier to support releases with older libuv (e.g. RHEL/CentOS 8).
    
    Also, RHEL 8 ships libuv in AppStream but omits the -devel subpackage, which is thus shipped in CentOS's extra Devel repo -- but that is not available on s390x. Add an ExcludeArch (with appropriate blocking bug filed) to indicate this.