[mkgmap-dev] Commit r3750: copyrightread3.patch by Mike Baggaley

Version mkgmap-r3750 was committed by gerd on Thu, 12 Jan 2017 copyrightread3.patch by Mike Baggaley - document that licence file and copyright file have to be in utf-8 - issue better error message in case they are not - allow to use variables in the file, use --help=options for details http://www.mkgmap.org.uk/websvn/revision.php?repname=mkgmap&rev=3750