r21351: Change ldb ejs bindings return codes.

r21351: Change ldb ejs bindings return codes.
We were returning just true/false and discarding error number and string.

This checking probably breaks swat, will fix it in next round as swat
is what made me look into this as I had no way to get back error messages
to show to the users.

Simo.
(This used to be commit 35886b4ae68be475b0fc8b2689ca04d766661261)