DEBUG_WRITERFILTER being on or off introduces binary incompatibility
between object files that implement and use those things, so it
shouldn't be changed without a full recompilation. Thus is matches
dbgutil.

Change-Id: Iec3c713ca7b299daf4b9cf1c978e49bf5ddf6886
Reviewed-on: https://gerrit.libreoffice.org/69438
Tested-by: Jenkins
Reviewed-by: Miklos Vajna <vmiklos@collabora.com>