libgis/libproj: +S_JTSK datum

git-svn-id: https://svn.osgeo.org/grass/grass/trunk@68134 15284696-431f-4ddb-bdfa-cd5b030d7da7

lib/gis/datum.table

@@ -88,4 +88,5 @@ nsd      "North_Sahara_1959"       clark80 dx=-186 dy=-93 dz=310
 gda94    "Geocentric_Datum_of_Australia_1994"    grs80    dx=0   dy=0   dz=0
 # http://lists.maptools.org/pipermail/proj/2012-September/006413.html
 itrf92   "ITRF92"    grs80 dx=0   dy=0    dz=0
-
+# https://epsg.io/5514 + https://epsg.io/6156-datum
+S_JTSK	"System_Jednotne_Trigonometricke_Site_Katastralni"	bessel	dx=589	dy=76	dz=480

lib/gis/datumtransform.table

@@ -98,3 +98,7 @@ tokyo   "towgs84=-147,506,687" "South Korea" " "
 cai     "towgs84=-149.1,138.1,90.9,-0.142,0.344,0.301,0.388" "Argentina" "provided by CONAE, Argentina"
 # http://lists.maptools.org/pipermail/proj/2012-September/006413.html
 itrf92	"towgs84=0,0,0,0,0,0,0" "Mexico" "Considered identical to WGS84"
+# http://epsg.io/5514 System_Jednotne_Trigonometricke_Site_Katastralni
+S_JTSK	"towgs84=570.8,85.7,462.8,4.998,1.587,5.261,3.56" "Czech Republic" "Accuracy about 1m"
+S_JTSK	"towgs84=572.213,85.334,461.94,-4.9732,-1.529,-5.2484,3.5378" "Czech Republic" "Accuracy about 1m"
+S_JTSK	"towgs84=485,169.5,483.8,7.786,4.398,4.103,0" "Slovakia" "Accuracy about 1m"

lib/proj/convert.c

@@ -777,6 +777,8 @@ static const char *papszDatumEquiv[] = {
     "Monte_Mario",
     "Campo_Inchauspe_1969",
     "Campo_Inchauspe",
+    "S_JTSK",
+    "System_Jednotne_Trigonometricke_Site_Katastralni",
     "S_JTSK_Ferro",
     "Militar_Geographische_Institut",
     "Potsdam_Datum_83",