Add 9.2.0-rc0 (drop 7.2)

Author: tianon

7.2/Dockerfile renamed to 9.2-rc/Dockerfile

@@ -1,10 +1,10 @@
 Origin: https://bugs.launchpad.net/qemu/+bug/1217339/comments/2
 Origin: https://lists.nongnu.org/archive/html/qemu-devel/2017-03/msg03039.html
 
-diff --git a/softmmu/runstate.c b/softmmu/runstate.c
+diff --git a/system/runstate.c b/system/runstate.c
 index ce8977c6a2..392e4c88be 100644
---- a/softmmu/runstate.c
-+++ b/softmmu/runstate.c
+--- a/system/runstate.c
++++ b/system/runstate.c
 @@ -613,7 +613,11 @@ void qemu_system_killed(int signal, pid_t pid)
      /* Cannot call qemu_system_shutdown_request directly because
       * we are in a signal handler.

7.2/Dockerfile.native renamed to 9.2-rc/Dockerfile.native

@@ -1,8 +1,4 @@
 {
-  "7.2": {
-    "url": "https://download.qemu.org/qemu-7.2.14.tar.xz",
-    "version": "7.2.14"
-  },
   "8.0": {
     "url": "https://download.qemu.org/qemu-8.0.5.tar.xz",
     "version": "8.0.5"
@@ -22,5 +18,9 @@
   "9.1": {
     "url": "https://download.qemu.org/qemu-9.1.1.tar.xz",
     "version": "9.1.1"
+  },
+  "9.2-rc": {
+    "url": "https://download.qemu.org/qemu-9.2.0-rc0.tar.xz",
+    "version": "9.2.0-rc0"
   }
 }