meson: add separate option for sysupdated, disable in release builds

This commit introduces a build-time option to enable/disable sysupdated
separately from sysupdate. 'auto' translated to enabled by default in
developer builds.

src/sysupdate/meson.build

@@ -40,7 +40,7 @@ executables += [
         libexec_template + {
                 'name' : 'systemd-sysupdated',
                 'dbus' : true,
-                'conditions' : ['ENABLE_SYSUPDATE'],
+                'conditions' : ['ENABLE_SYSUPDATED'],
                 'sources' : files('sysupdated.c'),
                 'dependencies' : threads,
         },
@@ -48,11 +48,11 @@ executables += [
                 'name' : 'updatectl',
                 'public' : true,
                 'sources' : systemd_updatectl_sources,
-                'conditions' : ['ENABLE_SYSUPDATE'],
+                'conditions' : ['ENABLE_SYSUPDATED'],
         },
 ]
 
-if conf.get('ENABLE_SYSUPDATE') == 1
+if conf.get('ENABLE_SYSUPDATED') == 1
         install_data('org.freedesktop.sysupdate1.conf',
                      install_dir : dbuspolicydir)
         install_data('org.freedesktop.sysupdate1.service',