Remove Lua 5.0 compatibility defines.

Suggested by François Perrad.

src/lib_math.c

@@ -221,10 +221,6 @@ LUALIB_API int luaopen_math(lua_State *L)
   rs = (RandomState *)lua_newuserdata(L, sizeof(RandomState));
   rs->valid = 0;  /* Use lazy initialization to save some time on startup. */
   LJ_LIB_REG(L, LUA_MATHLIBNAME, math);
-#if defined(LUA_COMPAT_MOD) && !LJ_52
-  lua_getfield(L, -1, "fmod");
-  lua_setfield(L, -2, "mod");
-#endif
   return 1;
 }
 

src/lib_string.c

@@ -737,10 +737,6 @@ LUALIB_API int luaopen_string(lua_State *L)
   GCtab *mt;
   global_State *g;
   LJ_LIB_REG(L, LUA_STRLIBNAME, string);
-#if defined(LUA_COMPAT_GFIND) && !LJ_52
-  lua_getfield(L, -1, "gmatch");
-  lua_setfield(L, -2, "gfind");
-#endif
   mt = lj_tab_new(L, 0, 1);
   /* NOBARRIER: basemt is a GC root. */
   g = G(L);

src/luaconf.h

@@ -92,10 +92,6 @@
 #define LUAI_GCMUL	200	/* Run GC at 200% of allocation speed. */
 #define LUA_MAXCAPTURES	32	/* Max. pattern captures. */
 
-/* Compatibility with older library function names. */
-#define LUA_COMPAT_MOD		/* OLD: math.mod, NEW: math.fmod */
-#define LUA_COMPAT_GFIND	/* OLD: string.gfind, NEW: string.gmatch */
-
 /* Configuration for the frontend (the luajit executable). */
 #if defined(luajit_c)
 #define LUA_PROGNAME	"luajit"  /* Fallback frontend name. */