[gnome-apps-nightly/stable] Use the more modern buildsystem declaration

[Mathieu Bridon <mbridon src gnome org>]

commit c7a842f44ce7d1e15bc7c5e135f19180ad1d9423
Author: Mathieu Bridon <bochecha daitauha fr>
Date:   Thu Oct 5 12:43:18 2017 +0200

    Use the more modern buildsystem declaration

 org.gnome.Maps.json    |    4 ++--
 org.gnome.Todo.json    |    4 ++--
 org.gnome.bijiben.json |    4 ++--
 org.gnome.gitg.json    |    4 ++--
 4 files changed, 8 insertions(+), 8 deletions(-)
---
diff --git a/org.gnome.Maps.json b/org.gnome.Maps.json
index d8b6696..c832aaa 100644
--- a/org.gnome.Maps.json
+++ b/org.gnome.Maps.json
@@ -48,7 +48,7 @@
         {
             "name": "libical",
             "cleanup": [ "/lib/cmake"],
-            "cmake": true,
+            "buildsystem": "cmake",
             "config-opts": [ "-DCMAKE_INSTALL_LIBDIR:PATH=/app/lib",
                              "-DBUILD_SHARED_LIBS:BOOL=ON" ],
             "sources": [
@@ -115,7 +115,7 @@
                 "/libexec",
                 "/share/dbus-1/services"
             ],
-            "cmake": true,
+            "buildsystem": "cmake",
             "config-opts": [
                 "-DENABLE_GTK=ON",
                 "-DENABLE_GOOGLE_AUTH=OFF",
diff --git a/org.gnome.Todo.json b/org.gnome.Todo.json
index d65a8f0..9b4e9a5 100644
--- a/org.gnome.Todo.json
+++ b/org.gnome.Todo.json
@@ -50,7 +50,7 @@
         {
             "name": "libical",
             "cleanup": [ "/lib/cmake"],
-            "cmake": true,
+            "buildsystem": "cmake",
             "config-opts": [ "-DCMAKE_INSTALL_LIBDIR:PATH=/app/lib",
                              "-DBUILD_SHARED_LIBS:BOOL=ON" ],
             "sources": [
@@ -69,7 +69,7 @@
                 "/libexec",
                 "/share/dbus-1/services"
             ],
-            "cmake": true,
+            "buildsystem": "cmake",
             "config-opts": [
                 "-DENABLE_GTK=ON",
                 "-DENABLE_GOOGLE_AUTH=OFF",
diff --git a/org.gnome.bijiben.json b/org.gnome.bijiben.json
index 2629359..909dfe1 100644
--- a/org.gnome.bijiben.json
+++ b/org.gnome.bijiben.json
@@ -53,7 +53,7 @@
         {
             "name": "libical",
             "cleanup": [ "/lib/cmake"],
-            "cmake": true,
+            "buildsystem": "cmake",
             "config-opts": [ "-DCMAKE_INSTALL_LIBDIR:PATH=/app/lib",
                              "-DBUILD_SHARED_LIBS:BOOL=ON" ],
             "sources": [
@@ -72,7 +72,7 @@
                 "/libexec",
                 "/share/dbus-1/services"
             ],
-            "cmake": true,
+            "buildsystem": "cmake",
             "config-opts": [
                 "-DENABLE_GTK=ON",
                 "-DENABLE_GOOGLE_AUTH=OFF",
diff --git a/org.gnome.gitg.json b/org.gnome.gitg.json
index 7290a39..06c22f3 100644
--- a/org.gnome.gitg.json
+++ b/org.gnome.gitg.json
@@ -37,7 +37,7 @@
     "modules": [
       {
         "name": "libssh2",
-        "cmake": true,
+        "buildsystem": "cmake",
         "config-opts": [ "-DCMAKE_INSTALL_LIBDIR:PATH=/app/lib",
                          "-DBUILD_SHARED_LIBS:BOOL=ON" ],
         "sources": [
@@ -50,7 +50,7 @@
       },
       {
         "name": "libgit2",
-        "cmake": true,
+        "buildsystem": "cmake",
         "config-opts": [ "-DBUILD_SHARED_LIBS:BOOL=ON",
                          "-DTHREADSAFE=ON" ],
         "sources": [