Update Xen version to 4.18-rc

Signed-off-by: Julien Grall <jgrall@amazon.com>
Release-acked-by: Henry Wang <Henry.Wang@arm.com>

README

@@ -1,11 +1,11 @@
-###############################################
+#################################################
 __  __            _  _    _  ___
-\ \/ /___ _ __   | || |  / |( _ )
- \  // _ \ '_ \  | || |_ | |/ _ \
- /  \  __/ | | | |__   _|| | (_) |
-/_/\_\___|_| |_|    |_|(_)_|\___/
+\ \/ /___ _ __   | || |  / |( _ )       _ __ ___
+ \  // _ \ '_ \  | || |_ | |/ _ \ _____| '__/ __|
+ /  \  __/ | | | |__   _|| | (_) |_____| | | (__
+/_/\_\___|_| |_|    |_|(_)_|\___/      |_|  \___|
 
-###############################################
+#################################################
 
 https://www.xen.org/
 

SUPPORT.md

@@ -9,7 +9,7 @@ for the definitions of the support status levels etc.
 
 # Release Support
 
-    Xen-Version: 4.18-unstable
+    Xen-Version: 4.18-rc
     Initial-Release: n/a
     Supported-Until: TBD
     Security-Support-Until: Unreleased - not yet security-supported

xen/Makefile

@@ -6,7 +6,7 @@ this-makefile := $(call lastword,$(MAKEFILE_LIST))
 # All other places this is stored (eg. compile.h) should be autogenerated.
 export XEN_VERSION       = 4
 export XEN_SUBVERSION    = 18
-export XEN_EXTRAVERSION ?= -unstable$(XEN_VENDORVERSION)
+export XEN_EXTRAVERSION ?= -rc$(XEN_VENDORVERSION)
 export XEN_FULLVERSION   = $(XEN_VERSION).$(XEN_SUBVERSION)$(XEN_EXTRAVERSION)
 -include xen-version