libreoffice security and bug fix update

1:5.3.6.1-21.0.1 - Replaced RedHat colors with Oracle colors, and the filename redhat.soc with oracle.soc in specfile - Build with --with-vendor='Oracle America, Inc.' 1:5.3.6.1-21 - Resolves: rhbz1066844 drop libreofficekit requires 1:5.3.6.1-20 - Resolves: rhbz1672003 CVE-2018-16858...