Bug#676190: grass-gui: gcpmanager fails to list source mapsets if non-ascii characters in grass data dir path

[Hamish]

Hi,

filed as upstream grass bug #1672
  https://trac.osgeo.org/grass/ticket/1672

see also a similar class of bugs & their solution:
  https://trac.osgeo.org/grass/search?q=UnicodeEncodeError&noquickjump=1&ticket=on


thanks,
Hamish