Testing 5.1, ouch

[Chris <coderight@...>]

Just for fun this weekend I started testing 5.1 to see how bad the
transition is going to be and already I'm running into problems.

Is there a complete list of changes from 5.0 to 5.1?  I see the
"list of incompatibilities" in the 5.1 manual and I have looked through
the new manual but everything doesn't seem to be covered.

For example, luaL_checkudata() used to return NULL if the type didn't
match but in 5.1 it seems to trigger an error, which is not what I want
because I just want to check the type not kill the runtime (ie. 5.0
behaviour seemed better).

I wondering what else lurks in the dark.

Thanks for any pointers anyone can provide.

-- 
// Chris