many cosmetic changes taken from more maintained jdk11
    - introduced debug_arches, bootstrap_arches, systemtap_arches, fastdebug_arches, sa_arches, share_arches, shenandoah_arches, zgc_arches
      instead of various hardcoded ifarches
    - updated systemtap
    - added requires excludes for debug pkgs
    - removed redundant logic around jsa files
    - added runtime requires of lksctp-tools and libXcomposite%
    - added and used Source15 TestSecurityProperties.java, but is made always positive as jdk15 now does not honor system policies
    - s390x excluded form fastdebug build