vendor: 引入 Lua 3.2 官方源码 + 移植评估 (lua_3.2 分支)

- 前 lua_State 时代 API(全局单例状态机), 与项目多实例+管道模式抽象冲突
- 评估结论: 不建议移植, 详见 doc/ADAPTATION-lua32.md

lib/lua/INSTALL

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+This is Lua 3.2
+
+* Installation
+  ------------
+  Building Lua on a Unix system should be very easy:
+
+	1. Edit "config" to suit your platform, if at all necessary.
+	2. Then, type "make".
+
+  See below for instructions for Windows and Macintosh.
+
+* What you get
+  ------------
+  If "make" succeeds, you get:
+	* an interpreter in ./bin/lua and a compiler in ./bin/luac;
+	* libraries in ./lib;
+	* include files in ./include.
+  These are the only directories you need for development.
+
+  There is a reference manual in html in ./doc, some sample code in ./test,
+  and some useful stuff in ./etc.
+  You don't need these directories for development.
+
+  See also the README files in the various subdirectories.
+  A convenient staring point is ./doc/readme.html.
+
+* If you have problems (and solutions!)
+  -------------------------------------
+  If "make" fails, please let us know (lua@tecgraf.puc-rio.br).
+  If you make changes to "config", please send them to us.
+
+* Shared libraries
+  ----------------
+  If you are running SunOs 4.x, type the following after "make" succeeds:
+	ld -o lib/liblua.so.3.2 src/*.o
+	ld -o lib/liblualib.so.3.2 src/lib/*.o
+
+  If you are running Linux, type the following after "make" succeeds:
+	ld -o lib/liblua.so.3.2 -shared src/*.o
+	ld -o lib/liblualib.so.3.2 -shared src/lib/*.o
+	cd lib
+	ln -s liblua.so.3.2 liblua.so
+	ln -s liblualib.so.3.2 liblualib.so.3.2
+
+  If you want the interpreter to use shared libraries, then do this too:
+	rm bin/lua
+	cd src/lua; make
+  You may need to include lib/ in the LD_LIBRAY_PATH environment variable.
+
+  Building shared libraries in other systems is similar but details differ.
+
+* Installation on Windows or Macintosh
+  ------------------------------------
+  The instructions for building Lua on a Mac or Windows machine depend on
+  the particular compiler you are using.
+  The simplest way is to create a folder with all .c and .h files.
+  Then create projects for the basic library, the standard library,
+  the interpreter and the compiler, as follows:
+
+  basic lib:	lapi.c lauxlib.c lbuffer.c lbuiltin.c ldo.c lfunc.c lgc.c
+		llex.c lmem.c lobject.c lparser.c lstate.c lstring.c ltable.c
+		ltm.c lundump.c lvm.c lzio.c
+
+  standard lib:	linit.c ldblib.c liolib.c lmathlib.c lstrlib.c
+
+  interpreter:	basic lib, standard lib, lua.c
+
+  compiler:	basic lib, dump.c luac.c opcode.c opt.c print.c stubs.c test.c
+
+  Of course, to use Lua as a library, you'll have to know how to create
+  and use libraries with your compiler.