dir_encoding: Use encoding from .oct-config file in current directory (bug #62761). * libinterp/corefcn/load-path.cc (load_path::read_dir_config), libinterp/corefcn/input.cc (input_system::dir_encoding): Use canonicalized path as key for the dir_encoding map. * test/file-encoding: Add tests for this feature. * test/Makefile.am: Add new folder to test suite.

--- a/test/Makefile.am	Tue Jul 12 17:52:20 2022 +0200
+++ b/test/Makefile.am	Wed Jul 13 13:20:48 2022 +0200
@@ -114,6 +114,7 @@
 include colon-op/module.mk
 include ctor-vs-method/module.mk
 include fcn-handle/module.mk
+include file-encoding/module.mk
 include json/module.mk
 include jupyter-notebook/module.mk
 include local-functions/module.mk