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, 4 insertions, 4 deletions

diff --git a/include/proj/coordinatesystem.hpp b/include/proj/coordinatesystem.hpp
index ffb908fc..573f18e2 100644
--- a/include/proj/coordinatesystem.hpp
+++ b/include/proj/coordinatesystem.hpp
@@ -623,7 +623,7 @@ class PROJ_GCC_DLL TemporalCS : public CoordinateSystem {
     INLINED_MAKE_SHARED
 
     PROJ_INTERNAL std::string
-    getWKT2Type(bool use2018Keywords) const override = 0;
+    getWKT2Type(bool use2019Keywords) const override = 0;
 
   private:
     TemporalCS(const TemporalCS &other) = delete;
@@ -661,7 +661,7 @@ class PROJ_GCC_DLL DateTimeTemporalCS final : public TemporalCS {
         const CoordinateSystemAxisNNPtr &axis);
     INLINED_MAKE_SHARED
 
-    PROJ_INTERNAL std::string getWKT2Type(bool use2018Keywords) const override;
+    PROJ_INTERNAL std::string getWKT2Type(bool use2019Keywords) const override;
 
   private:
     DateTimeTemporalCS(const DateTimeTemporalCS &other) = delete;
@@ -697,7 +697,7 @@ class PROJ_GCC_DLL TemporalCountCS final : public TemporalCS {
         const CoordinateSystemAxisNNPtr &axis);
     INLINED_MAKE_SHARED
 
-    PROJ_INTERNAL std::string getWKT2Type(bool use2018Keywords) const override;
+    PROJ_INTERNAL std::string getWKT2Type(bool use2019Keywords) const override;
 
   private:
     TemporalCountCS(const TemporalCountCS &other) = delete;
@@ -733,7 +733,7 @@ class PROJ_GCC_DLL TemporalMeasureCS final : public TemporalCS {
         const CoordinateSystemAxisNNPtr &axis);
     INLINED_MAKE_SHARED
 
-    PROJ_INTERNAL std::string getWKT2Type(bool use2018Keywords) const override;
+    PROJ_INTERNAL std::string getWKT2Type(bool use2019Keywords) const override;
 
   private:
     TemporalMeasureCS(const TemporalMeasureCS &other) = delete;