[evince] Flatpak: Bundle meson

[Jordan Petridis <jpetridis src gnome org>]

commit c672bf138c5324a4cb5def38420f322fa6971e45
Author: Jordan Petridis <jpetridis gnome org>
Date:   Tue Oct 16 19:25:29 2018 +0300

    Flatpak: Bundle meson
    
    We currently need meson 0.48.0+ but meson was downgraded in the
    runtime due to some regression back to 0.47.2 so we need to bundle
    it for the time being.

 build-aux/flatpak/org.gnome.Evince.json | 14 ++++++++++++++
 1 file changed, 14 insertions(+)
---
diff --git a/build-aux/flatpak/org.gnome.Evince.json b/build-aux/flatpak/org.gnome.Evince.json
index a89fcd27..52725b34 100644
--- a/build-aux/flatpak/org.gnome.Evince.json
+++ b/build-aux/flatpak/org.gnome.Evince.json
@@ -46,6 +46,20 @@
         "*.a"
     ],
     "modules": [
+        {
+            "name" : "meson",
+            "buildsystem" : "simple",
+            "build-commands" : [
+                "python3 setup.py install --prefix=/app"
+            ],
+            "sources" : [
+                {
+                    "type" : "git",
+                    "url" : "https://github.com/mesonbuild/meson.git";,
+                    "tag" : "0.48.0"
+                }
+            ]
+        },
         {
             "name": "openjpeg",
             "buildsystem": "cmake-ninja",