Sorry, I don’t think its a good idea to patch Lua at this stage. The final 2.6 release is very near, so we should be as carefully as possible and avoid throwing in untested stuff at that level.
But we anyway had planed to use LuaJit 2, as soon as it gets stable. From our tests LuaJit 1 was till now not really worth the trouble so far, but LuaJit 2 definitely is. We also need a PPC build for OSX, which LuaJit does not support at all.
Working around pcalls on serious events (even though pcalls are not the best solution to critical error trapping either) can be dangerous…
At least don’t RemDebug with important unsaved songs in memory.