[mkgmap-dev] Commit r4266: - Let options --gmapi and --nsis imply option --tdbfile

Version mkgmap-r4266 was committed by gerd on Tue, 05 Feb 2019 - Let options --gmapi and --nsis imply option --tdbfile - Stop processing with rc=1 if --no-tdbfile is given in combination with --gmapi or with --nsis - Add robustness in NsisBuilder regarding the existence of an index file http://www.mkgmap.org.uk/websvn/revision.php?repname=mkgmap&rev=4266