gengal.sh was originally based on unopkg.sh
which had this --verbose switch...

commit 164027e4
Date:   Fri Apr 5 16:39:24 2013 +0100

    gengal: re-base on original tool.

    new wrapper based on unopkg.sh.
    work re-based on original SUSE implementation.

and unopkg.sh later had VERBOSE removed...

commit 1fc195f7
Author: Stephan Bergmann <sbergman@redhat.com>
Date:   Thu Oct 17 15:34:53 2013 +0200

    Simplify code (VERBOSE was unused)

but gengal.sh retained its unused VERBOSE variable

Change-Id: I56aa830aef829c7727550fcaf7aed5058fffdc78
Reviewed-on: https://gerrit.libreoffice.org/58308
Tested-by: Jenkins
Reviewed-by: Caolán McNamara <caolanm@redhat.com>
Tested-by: Caolán McNamara <caolanm@redhat.com>