[niepce] Issue #2 - Added Exiv2 to the flatpak

[Hubert Figuière <hub src gnome org>]

commit 3d2b8a51336343d5a58a3fc8f3fc9447f00f602d
Author: Hubert Figuière <hub figuiere net>
Date:   Sat Dec 22 18:35:42 2018 -0500

    Issue #2 - Added Exiv2 to the flatpak
    
    https://gitlab.gnome.org/GNOME/niepce/issues/2

 flatpak/org.gnome.Niepce.json | 26 ++++++++++++++++++++++++++
 1 file changed, 26 insertions(+)
---
diff --git a/flatpak/org.gnome.Niepce.json b/flatpak/org.gnome.Niepce.json
index dc66686..d9d1f50 100644
--- a/flatpak/org.gnome.Niepce.json
+++ b/flatpak/org.gnome.Niepce.json
@@ -66,6 +66,32 @@
                 }
             ]
         },
+        {
+            "name": "gexiv2",
+            "modules": [
+                {
+                    "name": "exiv2",
+                    "buildsystem": "cmake-ninja",
+                    "config-opts": ["-DCMAKE_BUILD_TYPE=Release"],
+                    "cleanup": [ "/bin" ],
+                    "sources": [
+                        {
+                            "type": "archive",
+                            "url": "http://exiv2.org/releases/exiv2-0.26-trunk.tar.gz";,
+                            "sha256": "c75e3c4a0811bf700d92c82319373b7a825a2331c12b8b37d41eb58e4f18eafb"
+                        }
+                    ]
+                }
+            ],
+            "config-opts": [ "--disable-introspection" ],
+            "sources": [
+                {
+                    "type": "archive",
+                    "url": "https://download.gnome.org/sources/gexiv2/0.10/gexiv2-0.10.8.tar.xz";,
+                    "sha256": "81c528fd1e5e03577acd80fb77798223945f043fd1d4e06920c71202eea90801"
+                }
+            ]
+        },
         {
             "name" : "babl",
             "build-options" : {