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diff --git a/lib/lua b/lib/lua
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diff --git a/lib/lua/HISTORY b/lib/lua/HISTORY
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-HISTORY for Lua 5.1
-
-* Changes from version 5.0 to 5.1
-  -------------------------------
-  Language:
-  + new module system.
-  + new semantics for control variables of fors.
-  + new semantics for setn/getn.
-  + new syntax/semantics for varargs.
-  + new long strings and comments.
-  + new `mod' operator (`%')
-  + new length operator #t
-  + metatables for all types
-  API:
-  + new functions: lua_createtable, lua_get(set)field, lua_push(to)integer.
-  + user supplies memory allocator (lua_open becomes lua_newstate).
-  + luaopen_* functions must be called through Lua.
-  Implementation:
-  + new configuration scheme via luaconf.h.
-  + incremental garbage collection.
-  + better handling of end-of-line in the lexer.
-  + fully reentrant parser (new Lua function `load')
-  + better support for 64-bit machines.
-  + native loadlib support for Mac OS X.
-  + standard distribution in only one library (lualib.a merged into lua.a)
-
-* Changes from version 4.0 to 5.0
-  -------------------------------
-  Language:
-  + lexical scoping.
-  + Lua coroutines.
-  + standard libraries now packaged in tables.
-  + tags replaced by metatables and tag methods replaced by metamethods,
-    stored in metatables.
-  + proper tail calls.
-  + each function can have its own global table, which can be shared.
-  + new __newindex metamethod, called when we insert a new key into a table.
-  + new block comments: --[[ ... ]].
-  + new generic for.
-  + new weak tables.
-  + new boolean type.
-  + new syntax "local function".
-  + (f()) returns the first value returned by f.
-  + {f()} fills a table with all values returned by f.
-  + \n ignored in [[\n .
-  + fixed and-or priorities.
-  + more general syntax for function definition (e.g. function a.x.y:f()...end).
-  + more general syntax for function calls (e.g. (print or write)(9)).
-  + new functions (time/date, tmpfile, unpack, require, load*, etc.).
-  API:
-  + chunks are loaded by using lua_load; new luaL_loadfile and luaL_loadbuffer.
-  + introduced lightweight userdata, a simple "void*" without a metatable.
-  + new error handling protocol: the core no longer prints error messages;
-    all errors are reported to the caller on the stack.
-  + new lua_atpanic for host cleanup.
-  + new, signal-safe, hook scheme.
-  Implementation:
-  + new license: MIT.
-  + new, faster, register-based virtual machine.
-  + support for external multithreading and coroutines.
-  + new and consistent error message format.
-  + the core no longer needs "stdio.h" for anything (except for a single
-    use of sprintf to convert numbers to strings).
-  + lua.c now runs the environment variable LUA_INIT, if present. It can
-    be "@filename", to run a file, or the chunk itself.
-  + support for user extensions in lua.c.
-    sample implementation given for command line editing.
-  + new dynamic loading library, active by default on several platforms.
-  + safe garbage-collector metamethods.
-  + precompiled bytecodes checked for integrity (secure binary dostring).
-  + strings are fully aligned.
-  + position capture in string.find.
-  + read('*l') can read lines with embedded zeros.
-
-* Changes from version 3.2 to 4.0
-  -------------------------------
-  Language:
-  + new "break" and "for" statements (both numerical and for tables).
-  + uniform treatment of globals: globals are now stored in a Lua table.
-  + improved error messages.
-  + no more '$debug': full speed *and* full debug information.
-  + new read form: read(N) for next N bytes.
-  + general read patterns now deprecated.
-    (still available with -DCOMPAT_READPATTERNS.)
-  + all return values are passed as arguments for the last function
-    (old semantics still available with -DLUA_COMPAT_ARGRET)
-  + garbage collection tag methods for tables now deprecated.
-  + there is now only one tag method for order.
-  API:
-  + New API: fully re-entrant, simpler, and more efficient.
-  + New debug API.
-  Implementation:
-  + faster than ever: cleaner virtual machine and new hashing algorithm.
-  + non-recursive garbage-collector algorithm.
-  + reduced memory usage for programs with many strings.
-  + improved treatment for memory allocation errors.
-  + improved support for 16-bit machines (we hope).
-  + code now compiles unmodified as both ANSI C and C++.
-  + numbers in bases other than 10 are converted using strtoul.
-  + new -f option in Lua to support #! scripts.
-  + luac can now combine text and binaries.
-
-* Changes from version 3.1 to 3.2
-  -------------------------------
-  + redirected all output in Lua's core to _ERRORMESSAGE and _ALERT.
-  + increased limit on the number of constants and globals per function
-    (from 2^16 to 2^24).
-  + debugging info (lua_debug and hooks) moved into lua_state and new API
-    functions provided to get and set this info.
-  + new debug lib gives full debugging access within Lua.
-  + new table functions "foreachi", "sort", "tinsert", "tremove", "getn".
-  + new io functions "flush", "seek".
-
-* Changes from version 3.0 to 3.1
-  -------------------------------
-  + NEW FEATURE: anonymous functions with closures (via "upvalues").
-  + new syntax:
-    - local variables in chunks.
-    - better scope control with DO block END.
-    - constructors can now be also written: { record-part; list-part }.
-    - more general syntax for function calls and lvalues, e.g.:
-      f(x).y=1
-      o:f(x,y):g(z)
-      f"string" is sugar for f("string")
-  + strings may now contain arbitrary binary data (e.g., embedded zeros).
-  + major code re-organization and clean-up; reduced module interdependecies.
-  + no arbitrary limits on the total number of constants and globals.
-  + support for multiple global contexts.
-  + better syntax error messages.
-  + new traversal functions "foreach" and "foreachvar".
-  + the default for numbers is now double.
-    changing it to use floats or longs is easy.
-  + complete debug information stored in pre-compiled chunks.
-  + sample interpreter now prompts user when run interactively, and also
-    handles control-C interruptions gracefully.
-
-* Changes from version 2.5 to 3.0
-  -------------------------------
-  + NEW CONCEPT: "tag methods".
-    Tag methods replace fallbacks as the meta-mechanism for extending the
-    semantics of Lua. Whereas fallbacks had a global nature, tag methods
-    work on objects having the same tag (e.g., groups of tables).
-    Existing code that uses fallbacks should work without change.
-  + new, general syntax for constructors {[exp] = exp, ... }.
-  + support for handling variable number of arguments in functions (varargs).
-  + support for conditional compilation ($if ... $else ... $end).
-  + cleaner semantics in API simplifies host code.
-  + better support for writing libraries (auxlib.h).
-  + better type checking and error messages in the standard library.
-  + luac can now also undump.
-
-* Changes from version 2.4 to 2.5
-  -------------------------------
-  + io and string libraries are now based on pattern matching;
-    the old libraries are still available for compatibility
-  + dofile and dostring can now return values (via return statement)
-  + better support for 16- and 64-bit machines
-  + expanded documentation, with more examples
-
-* Changes from version 2.2 to 2.4
-  -------------------------------
-  + external compiler creates portable binary files that can be loaded faster
-  + interface for debugging and profiling
-  + new "getglobal" fallback
-  + new functions for handling references to Lua objects
-  + new functions in standard lib
-  + only one copy of each string is stored
-  + expanded documentation, with more examples
-
-* Changes from version 2.1 to 2.2
-  -------------------------------
-  + functions now may be declared with any "lvalue" as a name
-  + garbage collection of functions
-  + support for pipes
-
-* Changes from version 1.1 to 2.1
-  -------------------------------
-  + object-oriented support
-  + fallbacks
-  + simplified syntax for tables
-  + many internal improvements
-
-(end of HISTORY)