Optimize the order of conditions in several places of the module

For example, instead of:

  if (translation_supported_type($node->type) && $op == 'delete') {

we could do this:

  if ($op == 'delete' && translation_supported_type($node->type)) {

and translation_supported_type() would only be invoked when $op == 'delete' which happens a lot less than the other nodeapi incarnations.

The same principle could be applies to the following, which happens on 2 different places of the module.

if (translation_supported_type($node->type) && isset($node->tnid)) {

Rather than the above, we could do:

if (isset($node->tnid) && translation_supported_type($node->type)) {

:)

PS: Setting needs work as it might need a proper patch provided.