[mkgmap-dev] Commit r4659: improve documentation about logging (logging.txt.patch by Mike Baggaley)

Version mkgmap-r4659 was committed by gerd on Thu, 15 Apr 2021 improve documentation about logging (logging.txt.patch by Mike Baggaley) http://www.mkgmap.org.uk/websvn/revision.php?repname=mkgmap&rev=4659