GitLab

	(Fread_char, Fread_char_exclusive): Don't signal an
	error for or throw away switch-frame events; instead, put them off
	until after we've found a character we can respond to.

	Rename unread_command_char to unread_command_event; it has
	subtly different semantics now, and we should use
	`make-obsolete-variable' to warn people.
	* lread.c (Fread_char): Change reference.