[mkgmap-dev] Commit r4808: implement new option --gmapi-minimal (gmapi-minimal-v5.patch)

Version mkgmap-r4808 was committed by gerd on Tue, 12 Oct 2021 implement new option --gmapi-minimal (gmapi-minimal-v5.patch) Special option for map providers to reduce disk writes when updating. See help for detailed usage. See also thread "mkgmap doing excessive writing and converting to disk if used with --gmapi option" https://www.mkgmap.org.uk/pipermail/mkgmap-dev/2021q3/032957.html http://www.mkgmap.org.uk/websvn/revision.php?repname=mkgmap&rev=4808