support for build with current Lua version 5.4.4

On some platforms this may require:
       re-using a sys/unix/hints file to generate updated Makefiles
       make spotless
       make fetch-lua

sys/msdos/Install.dos

@@ -44,7 +44,7 @@ II. There once was a time when people built NetHack right on their DOS machine.
     and pdcurses from:
         https://github.com/wmcbrine/PDCurses.git
     and Lua from:
-        http://www.lua.org/ftp/lua-5.4.3.tar.gz
+        http://www.lua.org/ftp/lua-5.4.4.tar.gz
 
     - A shell script to download the above-mentioned djgpp cross-compiler and
       associated support pieces for either linux or macOS is available:

sys/msdos/Makefile.GCC

@@ -42,13 +42,13 @@ GAMEDIR =../binary
 ifeq "$(LUA_VERSION)" "5.3.5"
 LUAVER=5.3.5
 else
-LUAVER=5.4.3
+LUAVER=5.4.4
 endif
 #---------------------------------------------------------------
 # Location of LUA
 #
 # Original source needs to be obtained from: 
-#    http://www.lua.org/ftp/lua-5.4.3.tar.gz
+#    http://www.lua.org/ftp/lua-5.4.4.tar.gz
 #
 #    This build assumes that the LUA sources are located
 #    at the specified location. If they are actually elsewhere
@@ -305,7 +305,7 @@ ALLOBJ = $(VOBJ) $(SOBJ) $(TILOBJ) $(TILOBJ2) $(VVOBJ)
 
 #===============-=================================================
 # LUA library
-# Source from http://www.lua.org/ftp/lua-5.4.3.tar.gz
+# Source from http://www.lua.org/ftp/lua-5.4.4.tar.gz
 #=================================================================
 
 LUASRC   = $(LUATOP)/src

sys/msdos/fetch-cross-compiler.sh

@@ -12,7 +12,7 @@ if [ -z "$GCCVER" ]; then
 fi
 
 if [ -z "$LUA_VERSION" ]; then
-	export LUA_VERSION=5.4.3
+	export LUA_VERSION=5.4.4
 fi
 
 if [ ! -d "$(pwd)/lib" ]; then