incorrect error message, while dropping PROCEDURE

Hi,

Currently if some one try to drop the PROCEDURE and
it don't have privilege or it's not an owner, than error message
still indicate object as FUNCTION.

Example:

postgres(at)37737=#drop procedure pro;
ERROR: must be owner of function pro

This doesn't look correct specially that now we have separate
object type as OBJECT_PROCEDURE. It seems like we need
to introduce new AclObjectKind for PROCEDURE and do the
necessary changes to pass the correct AclObjectKind.

PFA patch, where introduced new AclObjectKind (ACL_KIND_PROCEDURE),
msg for the new AclObjectKind, and passed it through at
appropriate places.

Also update the necessary "make check" expected output changes.

Regards,

Thanks,
Rushabh Lathia
www.EnterpriseDB.com