autocorres: changelog+README for 1.9 release

Signed-off-by: Gerwin Klein <gerwin.klein@proofcraft.systems>

tools/autocorres/tools/release_files/ChangeLog

@@ -1,3 +1,8 @@
+AutoCorres 1.9 (31 October 2022)
+--------------
+
+	* Isabelle2021-1 edition of both AutoCorres and the C parser.
+
 AutoCorres 1.8 (31 October 2021)
 --------------
 

tools/autocorres/tools/release_files/README

@@ -32,7 +32,7 @@ AutoCorres is packaged as a theory for Isabelle2021:
 
     https://isabelle.in.tum.de
 
-AutoCorres currently supports three platforms: ARM, X64, and RISCV64.
+AutoCorres currently supports four platforms: ARM, AARCH64, X64, and RISCV64.
 The platform determines the sizes of C integral and pointer types.
 
 For ARM, the sizes are:
@@ -40,6 +40,11 @@ For ARM, the sizes are:
   - 32 bits: pointers, long, int
   - 16 bits: short
 
+For AARCH64:
+  - 64 bits: pointers, long long, long
+  - 32 bits: int
+  - 16 bits: short
+
 For X64:
   - 64 bits: pointers, long long, long
   - 32 bits: int
@@ -120,9 +125,9 @@ This package contains:
     * Compatibility word libraries and associated lemmas, for
       assisting with reasoning about words (such as 32-bit words).
 
-    * Libraries from Data61 for defining and reasoning about monads,
-      including definitions for nondeterministic state monads and option
-      monads, along with a large proof library relating to these
+    * Libraries from the l4v repository for defining and reasoning about
+      monads, including definitions for nondeterministic state monads and
+      option monads, along with a large proof library relating to these
       definitions.
 
     * The "wp" weakest precondition tool, which can be used to