Log Message:
Updated dialog to 1.3.20160828.

2016/08/28
	+ improve parsing and trace for "bindkey", to convert space to/from
	  "\s", as well as handle octal escapes for single byte characters.
	+ change explicit checks for space character used for select or toggle
	  to make this rebindable to "TOGGLE" (prompted by discussion with
	  Paul van Tilburg).
	+ add default bindings for cursor left/right to formbox.  The cursor
	  left/right cases were replaced with rebindable symbols in 2005/12/07
	  without providing these keys as default values (report/patch by
	  Miroslav Lichvar).
	+ modified autoconf macros
	  + CF_PROG_LINT add cpplint to programs to use; drop ad hoc tdlint and
	    alint.
	  + CF_CC_ENV_FLAGS don't limit the check to -I, -U and -D options,
	    since the added options can include various compiler options before
	    and after preprocessor options.
	  + CF_GNU_SOURCE recent glibc (Debian 2.23-4 for example) has
	    misordered ifdef/checks for new symbol _DEFAULT_SOURCE, producing
	    warning messages when only _GNU_SOURCE is defined.  Add a followup
	    check to define _DEFAULT_SOURCE.
	  + CF_XOPEN_SOURCE use _GNU_SOURCE for cygwin headers, tested with
	    cygwin 2.3, 2.5 (patch by Corinna Vinschen).
	+ mention --no-collapse option in manual page description of
	  --tab-correct option.
	+ update config.guess, config.sub