[mkgmap-dev] Commit: r1410: Add --merge-lines option to combine lines at lower zoom levels.

Version 1410 was commited by markb on 2009-11-29 19:18:02 +0000 (Sun, 29 Nov 2009) Add --merge-lines option to combine lines at lower zoom levels. Also adds --reduce-point-density option to set the error distance used by the Douglas Peucker line simplifying filter. Patch by Johann Gail. Trivial mods by me to options text and also to disable the DP filter when --reduce-point-density=0 is specified.