[babl] babl: add Rec2020 space

[Øyvind Kolås <ok src gnome org>]

commit c28033c7011f6b35c15fb81f273d127894fd76f3
Author: Øyvind Kolås <pippin gimp org>
Date:   Sun Sep 3 18:19:35 2017 +0200

    babl: add Rec2020 space

 babl/babl-space.c |   11 +++++++++--
 1 files changed, 9 insertions(+), 2 deletions(-)
---
diff --git a/babl/babl-space.c b/babl/babl-space.c
index 84125c0..ccf9621 100644
--- a/babl/babl-space.c
+++ b/babl/babl-space.c
@@ -283,6 +283,13 @@ babl_space_class_init (void)
                0.3000,  0.6000,
                0.1500,  0.0600,
                babl_trc("sRGB"), NULL, NULL);
+  babl_space_from_chromaticities ("Rec2020",
+               0.3127,  0.3290, /* D65 */
+               0.708,  0.292,
+               0.170,  0.797,
+               0.131,  0.046,
+               // XXX: is using sRGB TRC right?
+               babl_trc("sRGB"), NULL, NULL);
 
   babl_space_from_chromaticities (
       "Adobe",
@@ -308,15 +315,15 @@ babl_space_class_init (void)
       0.1550,  0.0700,
       babl_trc("1.8"), NULL, NULL);
 
+#if 0
   babl_space_from_chromaticities (
-     "WideGamutRGB",
+     "WideGamut",
      0.34567, 0.3585,  /* D50 */
      0.7350,  0.2650,
      0.1150,  0.8260,
      0.1570,  0.0180,
      babl_trc("2.2"), NULL, NULL);
 
-#if 0
   babl_space_from_chromaticities (
       "Best",
       0.34567, 0.3585,  /* D50 */