[gimp] build: bump glib dependency in flatpak nightly manifest.

[Jehan Pagès <jehanp src gnome org>]

commit 49e60ae72b8a767b2c3bfea540731e8c07db7d6d
Author: Jehan <jehan girinstud io>
Date:   Thu Jan 4 22:53:12 2018 +0100

    build: bump glib dependency in flatpak nightly manifest.
    
    We now need glib 2.54.2 which is not available in org.gnome.Sdk,
    neither 3.24 nor 3.26.

 build/flatpak/org.gimp.GIMP-nightly.json |   21 ++++++++++++++++++++-
 1 files changed, 20 insertions(+), 1 deletions(-)
---
diff --git a/build/flatpak/org.gimp.GIMP-nightly.json b/build/flatpak/org.gimp.GIMP-nightly.json
index fd5c912..71d518c 100644
--- a/build/flatpak/org.gimp.GIMP-nightly.json
+++ b/build/flatpak/org.gimp.GIMP-nightly.json
@@ -26,9 +26,28 @@
     "cleanup": ["/include", "/lib/pkgconfig", "/share/pkgconfig",
                 "/share/aclocal", "/man", "/share/man", "/share/gtk-doc",
                 "/share/vala", "*.la", "*.a", "/bin/wmf*", "/bin/libwmf-*",
-                "/bin/pygtk*", "/bin/pygobject*", "/bin/pygobject-codegen-2.0"],
+                "/bin/pygtk*", "/bin/pygobject*", "/bin/pygobject-codegen-2.0",
+
+                "/share/glib-2.0/codegen", "/bin/gdbus-codegen", "/bin/glib-*",
+                "/bin/gobject-query", "/bin/gresource", "/bin/gtester*"],
     "modules": [
         {
+            "name" : "glib2",
+            "config-opts" : [
+                "--with-pcre=system"
+            ],
+            "ensure-writable" : [
+                "/share/glib-2.0/codegen/*.pyc"
+            ],
+            "sources" : [
+                {
+                    "url": "https://download.gnome.org/sources/glib/2.54/glib-2.54.2.tar.xz";,
+                    "sha256": "bb89e5c5aad33169a8c7f28b45671c7899c12f74caf707737f784d7102758e6c",
+                    "type": "archive"
+                }
+            ]
+        },
+        {
             "name": "mypaint-brushes",
             "sources": [
                 {