[gnome-boxes] build: Install appstream metadata to non-deprecated location

[Jeremy Bicha <jbicha src gnome org>]

commit 9f654a2a5b2f4c5945c6bd959e32b89aca986e8f
Author: Jeremy Bicha <jbicha ubuntu com>
Date:   Wed Nov 8 13:24:54 2017 -0500

    build: Install appstream metadata to non-deprecated location
    
    https://bugzilla.gnome.org/show_bug.cgi?id=790084

 data/meson.build |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/data/meson.build b/data/meson.build
index f3ffdee..daa5267 100644
--- a/data/meson.build
+++ b/data/meson.build
@@ -29,7 +29,7 @@ custom_target ('appdata-file',
   input: 'org.gnome.Boxes.appdata.xml.in',
   output: 'org.gnome.Boxes.appdata.xml',
   install: true,
-  install_dir: join_paths (data_dir, 'appdata'),
+  install_dir: join_paths (data_dir, 'metainfo'),
   command: [ msgfmt, '--xml', '--template', '@INPUT@', '-d', po_dir, '-o', '@OUTPUT@' ],
 )