...and change connectivity/source/parse/sqlflex.l license header from using
(unusual, anyway) // comments to using /* */ comment, so that it can go before
Flex's opening %{

Change-Id: I371890e937cc5055405c17226dd87ba1694688aa
Reviewed-on: https://gerrit.libreoffice.org/68433
Tested-by: Jenkins
Reviewed-by: Stephan Bergmann <sbergman@redhat.com>