erase subfunctions when primary function scope is deleted (bug #38691) * symtab.h (symbol_table::fcn_info::fcn_info_rep::clear_map): Rename from clear_unlocked. New arg, force. (symbol_table::fcn_info::fcn_info_rep::clear_autoload_function, (symbol_table::fcn_info::fcn_info::clear_autoload_function, symbol_table::fcn_info::fcn_info_rep::clear_user_function, symbol_table::fcn_info::fcn_info::clear_user_function, symbol_table::fcn_info::fcn_info_rep::clear, symbol_table::fcn_info::clear, symbol_table::clear_all, symbol_table::clear_functions.): New arg, force. (symbol_table::erase_scope): Call erase_subfunctions_in_scope. (symbol_table::do_pop_context, symbol_table::do_clear_global_pattern): Style fixes. * symtab.cc (symbol_table::cleanup): Simplify. * test/bug-38691/module.mk, test/bug-38691/bug-38691.tst, test/bug-38691/dir1/func1.m, test/bug-38691/dir2/func1.m, test/bug-38691/dir2/func2.m, test/bug-38691/dir2/func3.m: New files. * test/Makefile.am: Include bug-38691/module.mk.