...so that different processes (e.g., when soffice.bin gets automatically
restarted) less easily overwrite each other's log files. The protocol (to
mostly stay backwards compatible and only use a single file name by default) is
to append a process ID iff the value of SAL_LOG_FILE ends in a hyphen, in which
case the process ID is appended to that value.
Change-Id: I516d7a286d029a16afc2f1379d5353f3f0eb5767
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/188914
Tested-by: Jenkins
Reviewed-by: Stephan Bergmann <stephan.bergmann@collabora.com>