Update to 6.20.02
    Drop patches accepted upstream
      root-dont-download-input-file-if-it-already-exists.patch
      root-fix-plugin-definition.patch
      root-man-install.patch
      root-pretty-printers.patch
      root-python3.patch
      root-stress-aarch64-ppc64le.patch
    Drop patches no longer relevant due to changes to the code
      root-missing-include-string.patch
      root-static-constexpr.patch
    Add workaround for PyROOT issues on ppc64le in EPEL 7
      root-epel7-ppc64le-pyroot.patch (patch conditionally applied)
    Fix path to moved data file in tutorial
      root-moved-file.patch
    Split the root-roofit subpackage into four different packages
      root-roofit, root-roofit-core, root-roofit-more and root-roostats
      The root-roofit-more library splits out the part of roofit that depends on
        the root-mathmore package
    New subpackage: root-histv7