[gimp] build: using cmake-ninja for jasper build system in flatpak.

[Jehan Pagès <jehanp src gnome org>]

commit 34ac56e7700ab35df274bd36cb2888c4bfee2180
Author: Jehan <jehan girinstud io>
Date:   Sat Oct 7 18:27:57 2017 +0200

    build: using cmake-ninja for jasper build system in flatpak.
    
    As asked by upstream at: https://github.com/flathub/flathub/pull/124

 build/flatpak/org.gimp.BaseApp.json |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/build/flatpak/org.gimp.BaseApp.json b/build/flatpak/org.gimp.BaseApp.json
index e5769ff..2775a5a 100644
--- a/build/flatpak/org.gimp.BaseApp.json
+++ b/build/flatpak/org.gimp.BaseApp.json
@@ -137,6 +137,7 @@
         {
             "name": "jasper",
             "cmake": true,
+            "buildsystem": "cmake-ninja",
             "builddir": true,
             "config-opts": [ "-DCMAKE_INSTALL_LIBDIR=lib" ],
             "cleanup": [ "/bin", "/share" ],