...so that it looks for the /usr/bin/ symlink with the name with which it is
created by sysui/CustomTarget_share.mk via sysui/desktop/share/create_tree.sh

Change-Id: I46c2bb9d8df936fd5c7bd52bbee86da959d5c6cb
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/176597
Tested-by: Jenkins
Reviewed-by: Stephan Bergmann <stephan.bergmann@allotropia.de>