Meson build: Set the license to LGPL 3.0

That's what COPYING and sigc++/tuple-utils/*.h specify.
See https://bugzilla.gnome.org/show_bug.cgi?id=763616

diff --git a/meson.build b/meson.build
index ebf9fab..1f26602 100644 (file)
--- a/meson.build
+++ b/meson.build
@@ -2,7 +2,7 @@
 
 project('libsigc++', 'cpp',
   version: '3.6.0',
-  license: 'LGPL-2.1-or-later',
+  license: 'LGPL-3.0-or-later',
   default_options: [
     'cpp_std=c++17',
     'warning_level=1',