[Merkaartor] crash in current build

[Norbert Wenzel]

Hi,

there are some issues with the current build of Merkaartor (at least in 
Ubuntu).

The first seems to be a minor one. On startup there is an error message 
about a parse error "tag mismatch" in line 56, col 64. No further 
information available from the error msg. (What file?)

The second is a plain crash, giving "Segmentation fault" on the console. 
It is reproducable on my machine, by simply selecting one single node. 
(Selecting multiple nodes with the selection area works as expected.)

May this be a result of some missing configuration due to parse error on 
startup? I tried to run "merkaartor -h/--h/-help/--help" but neither 
worked, so what was the trick to force Merkaartor to recreate the cfg file?

thanks,
Norbert