[mkgmap-dev] Commit r4105: improve description of options

Version mkgmap-r4105 was committed by gerd on Sun, 04 Feb 2018 improve description of options documentation-v4.patch by Mike Baggaley: -- Clarification that if you specify --route you do not also need to specify --net. -- Clarification that --net is for producing a map with full address search but no routing. -- Clarification that 25 is the default value for --draw-priority. -- Reversed the order of --transparent and --draw-priority so that the reader knows about transparency before reading about the drawing priority. -- Added a set of equivalents to --polygon-size (that I hope I have understood correctly). http://www.mkgmap.org.uk/websvn/revision.php?repname=mkgmap&rev=4105