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.

meson.build

@@ -1609,6 +1609,20 @@ have = get_option('sysupdate').require(
         error_message : 'fdisk and openssl required').allowed()
 conf.set10('ENABLE_SYSUPDATE', have)
 
+have2 = get_option('sysupdated')
+if have2 == 'enabled'
+        if have
+                have2 = true
+        else
+                error('sysupdated requires sysupdate to be enabled')
+        endif
+elif have2 == 'auto'
+        have2 = have and conf.get('BUILD_MODE_DEVELOPER') == 1
+else
+        have2 = false
+endif
+conf.set10('ENABLE_SYSUPDATED', have2)
+
 conf.set10('ENABLE_STORAGETM', get_option('storagetm'))
 
 have = get_option('importd').require(
@@ -3071,6 +3085,7 @@ foreach tuple : [
         ['sysext'],
         ['systemd-analyze',        conf.get('ENABLE_ANALYZE') == 1],
         ['sysupdate'],
+        ['sysupdated'],
         ['sysusers'],
         ['storagetm'],
         ['timedated'],