[gobject-introspection/ebassi/final-type: 48/50] Add version macros for 1.70

[Emmanuele Bassi <ebassi src gnome org>]

commit ae4f2de5383add74943ebe67593ce9fd484372c6
Author: Emmanuele Bassi <ebassi gnome org>
Date:   Mon Jul 26 16:39:24 2021 +0100

    Add version macros for 1.70
    
    We are going to introduce new API.

 girepository/giversionmacros.h | 6 ++++++
 1 file changed, 6 insertions(+)
---
diff --git a/girepository/giversionmacros.h b/girepository/giversionmacros.h
index a941ee2d..273af725 100644
--- a/girepository/giversionmacros.h
+++ b/girepository/giversionmacros.h
@@ -165,4 +165,10 @@
 # define GI_AVAILABLE_IN_1_66                 _GI_EXTERN
 #endif
 
+#if defined(GLIB_VERSION_2_70) && GLIB_VERSION_MAX_ALLOWED < GLIB_VERSION_2_70
+# define GI_AVAILABLE_IN_1_70                 GLIB_UNAVAILABLE(2, 70)
+#else
+# define GI_AVAILABLE_IN_1_70                 _GI_EXTERN
+#endif
+
 #endif /* __GIVERSIONMACROS_H__ */