remap Potsdam_Datum_83 to Deutsches_Hauptdreiecksnetz to enable datum selection dialog (thanks, Paul); fix of umlaut

git-svn-id: https://svn.osgeo.org/grass/grass/trunk@38813 15284696-431f-4ddb-bdfa-cd5b030d7da7

lib/gis/datumtransform.table

@@ -68,7 +68,7 @@ eur50   "towgs84=-178.4,-83.2,-221.3,0.540,-0.532,-0.126,21.2" "Spain (Northwest
 eur50   "towgs84=-181.5,-90.3,-187.2,0.144,0.492,-0.394,17.57" "Spain (Balearic Islands)" "Accuracy about 1.5m"
 eur50   "towgs84=-84.1,-101.8,-129.7,0,0,0.468,1.05" "Turkey" "Accuracy about 2m"
 potsdam "towgs84=612.4,77.0,440.2,-0.054,0.057,-2.797,2.55" "Germany (Sachsen)" "Accuracy <1m"
-potsdam "towgs84=599.4,72.4,419.2,-0.063,-0.022,-2.723,6.46" "Germany (Thüringen)" "Accuracy <1m"
+potsdam "towgs84=599.4,72.4,419.2,-0.063,-0.022,-2.723,6.46" "Germany (Thüringen)" "Accuracy <1m"
 potsdam "towgs84=590.5,69.5,411.6,-0.796,-0.052,-3.601,8.30" "Germany (West - North - 52d20'N to 55d00'N)" "Accuracy <1m"
 potsdam "towgs84=584.8,67.0,400.3,0.105,0.013,-2.378,10.29" "Germany (West - Middle - 50d20'N to 52d20'N)" "Accuracy <1m"
 potsdam "towgs84=597.1,71.4,412.1,0.894,0.068,-1.563,7.58" "Germany (West - South - 47d00N to 50d20'N)" "Accuracy <1m"

lib/proj/convert.c

@@ -748,6 +748,8 @@ static const char *papszDatumEquiv[] = {
     "Campo_Inchauspe",
     "S_JTSK_Ferro",
     "Militar_Geographische_Institut",
+    "Potsdam_Datum_83",
+    "Deutsches_Hauptdreiecksnetz",
     NULL
 };