Use in API and utilities WKT2_2019 instead of WKT2_2018 (fixes #1518)

- C API: PJ_GUESSED_WKT2_2019 is added, PJ_GUESSED_WKT2_2018 aliased to it
- C API: PJ_WKT2_2019[_SIMPLIFIED] is added, PJ_WKT2_2018[_SIMPLIFIED] alias to it
- C++ API: similarly for WKTFormatter::Convention::WKT2_2019[_SIMPLIFIED]
Those above changes should be fully backward API and ABI compatible.

projinfo changes:
- accept WKT2_2019 as value for -o switch. WKT2_2018 is still accepted (undocumented)
- output now uses 'WKT2_2019 string:', so might break scripts that would rely on that.

Other internal code references to WKT2_2018 changes to WKT2_2019, included
in tests.

1 files changed, 11 insertions, 11 deletions

diff --git a/test/unit/test_datum.cpp b/test/unit/test_datum.cpp
index fbd1f79d..8a5d67cf 100644
--- a/test/unit/test_datum.cpp
+++ b/test/unit/test_datum.cpp
@@ -1,7 +1,7 @@
 /******************************************************************************
  *
  * Project:  PROJ
- * Purpose:  Test ISO19111:2018 implementation
+ * Purpose:  Test ISO19111:2019 implementation
  * Author:   Even Rouault <even dot rouault at spatialys dot com>
  *
  ******************************************************************************
@@ -273,7 +273,7 @@ TEST(datum, dynamic_geodetic_reference_frame) {
 
     EXPECT_EQ(drf->exportToWKT(WKTFormatter::create().get()), expected);
 
-    auto expected_wtk2_2018 =
+    auto expected_wtk2_2019 =
         "DYNAMIC[\n"
         "    FRAMEEPOCH[2018.5],\n"
         "    MODEL[\"My model\"]],\n"
@@ -284,8 +284,8 @@ TEST(datum, dynamic_geodetic_reference_frame) {
         "    ANCHOR[\"My anchor\"]]";
     EXPECT_EQ(
         drf->exportToWKT(
-            WKTFormatter::create(WKTFormatter::Convention::WKT2_2018).get()),
-        expected_wtk2_2018);
+            WKTFormatter::create(WKTFormatter::Convention::WKT2_2019).get()),
+        expected_wtk2_2019);
 }
 
 // ---------------------------------------------------------------------------
@@ -355,7 +355,7 @@ TEST(datum, temporal_datum_time_origin_non_ISO8601) {
 
 // ---------------------------------------------------------------------------
 
-TEST(datum, temporal_datum_WKT2_2018) {
+TEST(datum, temporal_datum_WKT2_2019) {
     auto datum = TemporalDatum::create(
         PropertyMap().set(IdentifiedObject::NAME_KEY, "Gregorian calendar"),
         DateTime::create("0000-01-01"),
@@ -367,7 +367,7 @@ TEST(datum, temporal_datum_WKT2_2018) {
 
     EXPECT_EQ(
         datum->exportToWKT(
-            WKTFormatter::create(WKTFormatter::Convention::WKT2_2018).get()),
+            WKTFormatter::create(WKTFormatter::Convention::WKT2_2019).get()),
         expected);
 }
 
@@ -385,15 +385,15 @@ TEST(datum, dynamic_vertical_reference_frame) {
 
     EXPECT_EQ(drf->exportToWKT(WKTFormatter::create().get()), expected);
 
-    auto expected_wtk2_2018 = "DYNAMIC[\n"
+    auto expected_wtk2_2019 = "DYNAMIC[\n"
                               "    FRAMEEPOCH[2018.5],\n"
                               "    MODEL[\"My model\"]],\n"
                               "VDATUM[\"test\",\n"
                               "    ANCHOR[\"My anchor\"]]";
     EXPECT_EQ(
         drf->exportToWKT(
-            WKTFormatter::create(WKTFormatter::Convention::WKT2_2018).get()),
-        expected_wtk2_2018);
+            WKTFormatter::create(WKTFormatter::Convention::WKT2_2019).get()),
+        expected_wtk2_2019);
 }
 
 // ---------------------------------------------------------------------------
@@ -412,7 +412,7 @@ TEST(datum, datum_ensemble) {
                  FormattingException);
     EXPECT_EQ(
         ensemble->exportToWKT(
-            WKTFormatter::create(WKTFormatter::Convention::WKT2_2018).get()),
+            WKTFormatter::create(WKTFormatter::Convention::WKT2_2019).get()),
         "ENSEMBLE[\"test\",\n"
         "    MEMBER[\"World Geodetic System 1984\",\n"
         "        ID[\"EPSG\",6326]],\n"
@@ -436,7 +436,7 @@ TEST(datum, datum_ensemble_vertical) {
         PositionalAccuracy::create("100"));
     EXPECT_EQ(
         ensemble->exportToWKT(
-            WKTFormatter::create(WKTFormatter::Convention::WKT2_2018).get()),
+            WKTFormatter::create(WKTFormatter::Convention::WKT2_2019).get()),
         "ENSEMBLE[\"unnamed\",\n"
         "    MEMBER[\"vdatum1\"],\n"
         "    MEMBER[\"vdatum2\"],\n"