[sysprof] build: reduce GLib requirement

[Christian Hergert <chergert src gnome org>]

commit 394772cb0157d7a1093eddf1128eac424e28ea6b
Author: Christian Hergert <chergert redhat com>
Date:   Tue May 7 23:01:57 2019 -0700

    build: reduce GLib requirement
    
    We can probably even do this further, but I want to do a bunch of
    tree moderniziation first.

 meson.build | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)
---
diff --git a/meson.build b/meson.build
index 4be9075..9610ff8 100644
--- a/meson.build
+++ b/meson.build
@@ -17,9 +17,8 @@ version_split = meson.project_version().split('.')
 datadir = get_option('datadir')
 podir = join_paths(meson.source_root(), 'po')
 
-
-glib_req_version = '>= 2.60'
-gtk_req_version = '>= 3.24'
+glib_req_version = '>= 2.56'
+gtk_req_version = '>= 3.22'
 
 cc = meson.get_compiler('c')
 cxx = meson.get_compiler('cpp')