make breakpoints in classdef methods work (bug #45404, bug #46451) * bp-table.h, bp-table.cc (bp_table::add_breakpoint): New argument, CLASS_NAME. Change all uses. Pass class name on to tree_evaluator::get_user_code. * cdef-class.h, cdef-class.cc (cdef_class::get_method, cdef_class::cdef_class_rep::get_method): New functions. * cdef-manager.h, cdef-manager.cc (cdef_manager::find_method): New function. * pt-eval.h, pt-eval.cc (tree_evaluator::get_user_code): New argument, CLASS_NAME. If given class name, look for classdef methods.

--- a/libinterp/octave-value/cdef-manager.cc	Mon Mar 25 13:59:41 2019 -0700
+++ b/libinterp/octave-value/cdef-manager.cc	Tue Mar 26 02:42:38 2019 +0000
@@ -936,4 +936,13 @@
 
     return pack;
   }
+
+  octave_value
+  cdef_manager::find_method (const std::string& class_name,
+                             const std::string& name) const
+  {
+    cdef_class cls = lookup_class (class_name);
+
+    return cls.get_method (name);
+  }
 }