[nautilus] Flatpak: Build meson since we require 0.44

[Carlos Soriano <csoriano src gnome org>]

commit 4045ac770074fed343cb6d932a46b4216f239082
Author: Carlos Soriano <csoriano gnome org>
Date:   Tue Jan 2 21:59:20 2018 +0100

    Flatpak: Build meson since we require 0.44
    
    With the latest changes, and it's going to take a while to be present
    in the Flatpak SDK.

 build-aux/flatpak/org.gnome.Nautilus.json | 16 +++++++++++++++-
 1 file changed, 15 insertions(+), 1 deletion(-)
---
diff --git a/build-aux/flatpak/org.gnome.Nautilus.json b/build-aux/flatpak/org.gnome.Nautilus.json
index 03b667658..92abb5387 100644
--- a/build-aux/flatpak/org.gnome.Nautilus.json
+++ b/build-aux/flatpak/org.gnome.Nautilus.json
@@ -18,6 +18,20 @@
     ],
     "cleanup": [ "/include", "/share/bash-completion" ],
     "modules": [
+        {
+            "name": "meson",
+            "buildsystem": "simple",
+             "build-commands": [
+                "python3 setup.py install --prefix=/app"
+            ],
+            "sources": [
+                {
+                    "type": "archive",
+                    "url": 
"https://github.com/mesonbuild/meson/releases/download/0.44.0/meson-0.44.0.tar.gz";,
+                    "sha256": "50f9b12b77272ef6ab064d26b7e06667f07fa9f931e6a20942bba2216ba4281b"
+                }
+            ]
+        },
         {
             "name": "exiv2",
             "sources": [
@@ -84,7 +98,7 @@
             "builddir": true,
             "name": "nautilus",
             "config-opts": [
-                "-Denable-selinux=false",
+                "-Dselinux=false",
                 "--libdir=/app/lib"
             ],
             "sources": [