Add Swedish datum rt90

git-svn-id: https://svn.osgeo.org/grass/grass/trunk@40870 15284696-431f-4ddb-bdfa-cd5b030d7da7

lib/gis/datum.table

@@ -77,6 +77,7 @@ por73    "Datum_73"          international dx=99999    dy=99999    dz=99999
 hjors55  "Hjorsey_1955"         international dx=-73      dy=46       dz=-86
 lis37    "Lisbon_1937"    international dx=99999    dy=99999    dz=99999
 ngo48    "NGO_1948"	  modif_bessel  dx=99999    dy=99999    dz=99999
+rt90     "Rikets_koordinatsystem_1990"    bessel   dx=99999    dy=99999    dz=99999
 # http://www.linz.govt.nz/geodetic/conversion-coordinates/geodetic-datum-conversion/nzgd1949-nzgd2000/three-and-seven-parameter/
 nzgd49   "New_Zealand_Geodetic_Datum_1949"       international dx=54.4  dy=-20.1  dz=183.1
 nzgd2k   "New_Zealand_Geodetic_Datum_2000"       grs80    dx=0   dy=0    dz=0

lib/gis/datumtransform.table

@@ -78,6 +78,7 @@ bel72   "towgs84=-99.1,53.3,-112.5,0.419,-0.830,1.885,-1.00" "Belgium" "Accuracy
 por73   "towgs84=-231.0,102.6,29.8,0.615,-0.198,0.881,1.79" "Portugal" " "
 lis37   "towgs84=-282.1,-72.2,120.0,-1.592,0.145,-0.890,-4.46" "Portugal" "Accuracy about 3m"
 ngo48   "towgs84=278.3,93.0,474.5,7.889,0.050,-6.610,6.21" "Norway" "Accuracy about 3m"
+rt90    "towgs84=414.1,41.3,603.1,-0.855,2.141,-7.023,0" "Sweden" " "
 # From GRASS datum.table file
 sam69   "towgs84=-60.0,-2.0,-41.0" "Brazil" " "
 sam69   "towgs84=-77.0,3.0,-45.0" "South America?" "Old GRASS sam69 parameters"