Refactor(builtins): Move luaopen_builtins from linit to lcmd

lcmd.c

@@ -1296,5 +1296,6 @@ LUAMOD_API int luaopen_lush (lua_State *L) {
   /* store in registry for OP_LUSH access */
   lua_pushvalue(L, -1);
   lua_rawseti(L, LUA_REGISTRYINDEX, LUA_RIDX_LUSH);
+  luaopen_builtins(L);  /* register builtins in lush table */
   return 1;
 }

linit.c

@@ -21,7 +21,6 @@
 #include "lauxlib.h"
 #include "llimits.h"
 #include "lcmd.h"
-#include "lbuiltin.h"
 
 
 /*
@@ -64,6 +63,5 @@ LUALIB_API void luaL_openselectedlibs (lua_State *L, int load, int preload) {
   }
   lua_assert((mask >> 1) == LUA_LUSHLIBK);
   lua_pop(L, 1);  /* remove PRELOAD table */
-  luaopen_builtins(L);  /* register builtins in lush table */
 }