[gtk/meson-warning] build: Avoid a Meson deprecation warning

[Emmanuele Bassi <ebassi src gnome org>]

commit e458ea2f3db32225f5d8d794ce8fe35dac9d825c
Author: Emmanuele Bassi <ebassi gnome org>
Date:   Tue Jan 8 14:46:46 2019 +0000

    build: Avoid a Meson deprecation warning
    
    Using an empty `configuration_data` object to copy a configuration file
    is deprecated since Meson 0.47 (released July 2018); the equivalent
    behaviour is available by using `copy: true`.

 meson.build                 | 2 +-
 testsuite/tools/meson.build | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/meson.build b/meson.build
index 53504f9279..93314fb628 100644
--- a/meson.build
+++ b/meson.build
@@ -7,7 +7,7 @@ project('gtk+', 'c',
           # https://github.com/mesonbuild/meson/issues/2289
           'c_std=gnu99',
         ],
-        meson_version : '>= 0.43.0',
+        meson_version : '>= 0.48.0',
         license: 'LGPLv2.1+')
 
 glib_major_req = 2
diff --git a/testsuite/tools/meson.build b/testsuite/tools/meson.build
index 837e94c6f8..f0cbb65948 100644
--- a/testsuite/tools/meson.build
+++ b/testsuite/tools/meson.build
@@ -8,7 +8,7 @@ if bash.found()
   foreach t : ['simplify', 'settings']
     configure_file(output: t,
                    input: '@0@.in'.format(t),
-                   configuration: configuration_data(),
+                   copy: true,
                    install: get_option('install-tests'),
                    install_dir: testexecdir)
     test(t, bash,