[mkgmap-dev] Commit r4881: Add more code needed in display tool to read GMP files or locked files

Version mkgmap-r4881 was committed by gerd on Fri, 28 Jan 2022 Add more code needed in display tool to read GMP files or locked files http://www.mkgmap.org.uk/websvn/revision.php?repname=mkgmap&rev=4881