Fix out-of-date status check for package functions. * ov-fcn.h (octave_function::xpackage_name): New member to keep track of the package to which a function belongs. (octave_function::octave_function): Initialize it; (octave_function::stash_package_name, octave_function::package_name): New accessor methods. (octave_function::canonical_name): New method to return to fully-qualified name of a function. * oct-parse.in.yy (load_fcn_from_file): Store package name in loaded function. * symtab.cc (split_name_with_package): New utility function. (out_of_date_check): Use the package owning the function when searching for newer versions in load_path. (load_out_of_date_fcn): New argument to pass the package name to load_fcn_from_file.