Late GUID for preloaded disposables

- Autostarted applications don't show when preloading; and
- Preloaded qubes paused before the session will have a working GUI when
  the session starts.

For: QubesOS/qubes-issues#1512
For: QubesOS/qubes-issues#9940
For: QubesOS/qubes-issues#9907
Requires: QubesOS/qubes-core-admin-client#359

Author: ben-grande

Makefile

@@ -179,7 +179,6 @@ all:
 
 install:
 ifeq ($(OS),Linux)
-	$(MAKE) install -C linux/autostart
 	$(MAKE) install -C linux/systemd
 	$(MAKE) install -C linux/aux-tools
 	$(MAKE) install -C linux/system-config

linux/autostart/Makefile

@@ -3861,7 +3861,7 @@ def test_643_vm_create_disposable_preload_autostart(
             "domain-preload-dispvm-autostart", self._test_event_handler
         )
         self.vm.features["qrexec"] = "1"
-        self.vm.features["supported-rpc.qubes.WaitForSession"] = "1"
+        self.vm.features["supported-rpc.qubes.WaitForRunningSystem"] = "1"
         self.vm.features["preload-dispvm-max"] = "1"
         for _ in range(10):
             if len(self.vm.get_feat_preload()) == 1: