Support setting breakpoints in get and set methods of classdef properties (bug #65610). * cdef-class.cc (cdef_class::cdef_class_rep::get_method): Also check for any `get` or `set` methods of `classdef` properties. * bp-table.cc (user_code_provider::operator ()): Support getting (closest) user code to `get` or `set` methods of `classdef` classes. (user_code_provider::populate_function_cache): Add `get` and `set` methods to function cache for `classdef` classes. * pt-eval.cc (tree_evaluator::get_user_code): Support getting user code for `get` or `set` methods of `classdef` properties. * test/classdef-debug/classdef_breakpoints2.m: Add handle class with get and set methods for new self tests. * test/classdef-debug/test-classdef-breakpoints.tst: Add new tests for adding and clearing breakpoints in `set` and `get` methods of `classdef` properties by line number or function name. Make sure breakpoints are deleted in existing tests also on test failures. Fix syntax error in 69eb4c27d8c8. * test/classdef-debug/module.mk: Add new file to build system. * etc/NEWS.10.md: Add note about new feature.

## System-wide startup file for Octave.
##
## If the environment variable OCTAVE_VERSION_INITFILE is set when Octave
## starts, then that file is executed instead of this file.
##
## This file contains commands that should be executed each time Octave starts
## for every user at this site.

## Configure readline using the file inputrc in the Octave startup directory.
readline_read_init_file (sprintf ("%s%s%s",
                                  __octave_config_info__ ("startupfiledir"),
                                  filesep, "inputrc"));

## Re-read user's personal inputrc to give precedence over Octave's default.
inputrc = getenv ("INPUTRC");
if (isempty (inputrc) && exist ("~/.inputrc", "file"))
  inputrc = "~/.inputrc";
endif
if (! isempty (inputrc))
  readline_read_init_file (inputrc);
endif
clear ("inputrc");

## Configure LESS pager if present
if (strcmp (PAGER (), "less") && isempty (getenv ("LESS")))
  PAGER_FLAGS ('-e -X -P"-- less ?pB(%pB\\%):--. (f)orward, (b)ack, (q)uit$"');
endif