Second update for release 3.10

Author: xavierleroy

Changelog

@@ -30,9 +30,10 @@ ISO C conformance:
 Bug fixing:
 - x86 64 bits: overflow in offset of `leaq` instructions (#407).
 - AArch64, ARM, PowerPC, RISC-V: wrong expansion of `__builtin_memcpy_aligned`
-  in some cases involving arguments that are stack addresses (#410, #412)
+  in cases involving arguments that are stack addresses (#410, #412)
 - PowerPC 64 bits: wrong selection of 64-bit rotate-and-mask
-  instructions (`rldic`, `rldicl`, `rldicr`).
+  instructions (`rldic`, `rldicl`, `rldicr`), resulting in assertion
+  failures later in the compiler.
 - RISC-V: update the Asm semantics to reflect the fact that
   register X1 is destroyed by some builtins.
 
@@ -42,13 +43,14 @@ Compiler internals:
   improves performance.
 - Add the ability to give formal semantics to numerical builtins
   with small integer return types.
-- PowerPC port: share code for memory accesses between Asmgen and Asmexpand
+- PowerPC: share code for memory accesses between Asmgen and Asmexpand
 - Declare `__compcert_i64*` helper runtime functions during the C2C
   pass, so that they are not visible during source elaboration.
 
 The clightgen tool:
 - Add support for producing Csyntax abstract syntax instead of Clight
-  abstract syntax (option `-csyntax` to `clightgen`) (#404, #413).
+  abstract syntax (option `-csyntax` to `clightgen`)
+  (contributed by Bart Jacobs; #404, #413).
 
 Coq development:
 - Added support for Coq 8.14 (#415).