Update cutecom to rev 17 via SR 811666
    
    https://build.opensuse.org/request/show/811666
    by user pluskalm + dimstar_suse
    - Small packaging adjustements:
      * Dont manually compress manpages
      * Fully leverage install command
    
    - Add patch to fix build with Qt 5.15:
      * 0001-Fix-build-with-Qt-5.15.patch
    - Spec cleanup