err is renamed to 'n_err'
'n_err' is now a 'native only' member, for native errors only
--HG--
extra : convert_revision : svn%3A39bc706e-5318-0410-9160-8a85361fbb7c/trunk%40242
fixed a codegen bug in function ids
removed extra native status, simplified native binding
--HG--
extra : convert_revision : svn%3A39bc706e-5318-0410-9160-8a85361fbb7c/trunk%40169