Disable deprecated bit32 Lua package

Lua 5.3 has built-in bitwise operations
https://www.lua.org/manual/5.3/manual.html#3.4.2

build.sh

@@ -54,7 +54,7 @@ cd build
 
 for i in ../src/lua/*.c; do
 	echo "  bootstrap CC $CFLAGS $i"
-	$CC $CFLAGS -DLUA_USE_POSIX -DLUA_COMPAT_BITLIB -c $i
+	$CC $CFLAGS -DLUA_USE_POSIX -c $i
 done
 
 rm luac.o

docs/html/lua_parser.html

@@ -12,7 +12,6 @@ <h1>API</h1>
 	<li>The base functions are defined, excluding <span class="cmd">dofile</span>, <span class="cmd">loadfile</span>, <span class="cmd">load</span>, and <span class="cmd">require</span>.</li>
 	<li><span class="cmd">table</span> is defined.</li>
 	<li><span class="cmd">string</span> is defined.</li>
-	<li><span class="cmd">bit32</span> is defined.</li>
 	<li><span class="cmd">math</span> is defined.</li>
 	<li><span class="cmd">debug</span> is defined.</li>
 	<li><span class="cmd">io</span> is defined.</li>

src/lua/Tupfile

@@ -34,7 +34,6 @@ srcs += loadlib.c
 srcs += linit.c
 srcs += lutf8lib.c
 
-CFLAGS += -DLUA_COMPAT_BITLIB
 CFLAGS += -w
 
 : foreach $(srcs) |> !cc -DLUA_USE_POSIX |> {objs}

src/tup/luaparser.c

@@ -775,7 +775,6 @@ int parse_lua_tupfile(struct tupfile *tf, struct buf *b, const char *name)
 		luaL_requiref(ls, "_G", luaopen_base, 1); lua_pop(ls, 1);
 		luaL_requiref(ls, LUA_TABLIBNAME, luaopen_table, 1); lua_pop(ls, 1);
 		luaL_requiref(ls, LUA_STRLIBNAME, luaopen_string, 1); lua_pop(ls, 1);
-		luaL_requiref(ls, LUA_BITLIBNAME, luaopen_bit32, 1); lua_pop(ls, 1);
 		luaL_requiref(ls, LUA_MATHLIBNAME, luaopen_math, 1); lua_pop(ls, 1);
 		luaL_requiref(ls, LUA_DBLIBNAME, luaopen_debug, 1); lua_pop(ls, 1);
 		luaL_requiref(ls, LUA_IOLIBNAME, luaopen_io, 1); lua_pop(ls, 1);