* cli/cli-interp.c (struct captured_execute_command_args):

	* cli/cli-interp.c (struct captured_execute_command_args):
	Remove.
	(do_captured_execute_command): Remove.
	(safe_execute_command): Use TRY_CATCH.
	* cli/cli-script.c (struct wrapped_read_command_file_args):
	Remove.
	(wrapped_read_command_file): Remove.
	(script_from_file): Use TRY_CATCH.
	* exceptions.c (catch_exception): Remove.
	* exceptions.h (catch_exception): Remove.
	(deprecated_throw_reason): Update comment.
	* mi/mi-main.c (captured_mi_execute_command): Change 'data'
	argument to 'context'.
	(mi_execute_command): Use TRY_CATCH.
	* remote.c (struct start_remote_args): Remove.
	(remote_start_remote): Update; change arguments.
	(remote_open_1): Use TRY_CATCH.