luajit2: update to 2026-07-31

Also refresh 020-riscv64-support.patch from the current state of
openresty/luajit2#236. The previous snapshot defined
asm_tail_prep(ASMState *as), but since openresty/luajit2 commit
68354f44 the callers pass a second TraceNo argument, so the riscv64
build failed with:

  lj_asm.c:2559:5: error: too many arguments to function 'asm_tail_prep'

The refreshed patch carries the upstream adaptation and restores the
build. The other four patches apply unchanged.

Signed-off-by: Josef Schlehofer <pepe.schlehofer@gmail.com>
(cherry picked from commit 578758e)
(cherry picked from commit f8b35d4)

Author: BKPepe

lang/lua/luajit2/Makefile

@@ -1,14 +1,14 @@
 include $(TOPDIR)/rules.mk
 
 PKG_NAME:=luajit2
-PKG_SOURCE_DATE:=2026-02-27
+PKG_SOURCE_DATE:=2026-07-31
 PKG_VERSION:=2.1.$(subst -,.,$(PKG_SOURCE_DATE))
-PKG_RELEASE:=2
+PKG_RELEASE:=1
 
 PKG_SOURCE_PROTO:=git
 PKG_SOURCE_URL:=https://github.com/openresty/luajit2
-PKG_MIRROR_HASH:=057f6c02cdfac3f7cacc21fcac45ff74084cabb4a4db2cc589ed332bb1aeddbb
-PKG_SOURCE_VERSION:=928290a470d35eb01324d5275b22fb86b13602a2
+PKG_MIRROR_HASH:=cf3ae553640fcd6400bc545d87c9a7a3317b9e944216bd76433b84eabb756c3e
+PKG_SOURCE_VERSION:=52f52587b37867ab19236eb6917001c2d6b662e7
 
 PKG_MAINTAINER:=Javier Marcet <javier@marcet.info>
 PKG_LICENSE:=MIT