Log Message:
Update to 1.2.20130902:

2013/09/02
	+ modify makefile rule to make the ".png" filenames created by groff
	  predictable.
	+ add option --help-tags to allow scripts to get the item's tag field
	  consistently from help- and help-item button results rather than
	  getting the item's text for the latter (discussion with Florent
	  Rougon).
	+ correct manpage discussion of DIALOG_ITEM_HELP versus --item-help,
	  as well as --help-button return status (report by Florent Rougon).
	+ correct limit used for --hline option (report by Devin Teske,
	  cf: 2011/06/30).
	+ do not print empty "[]" if a --hline option was given with an empty
	  value (report by Devin Teske).
	+ miscellaneous configure script fixes/updates.  In particular, add
	  option --with-shared which builds shared libraries without a libtool
	  dependency.
	+ add FreeBSD port-files for test-builds.
	+ update lt.po, add fa.po from
		http://translationproject.org/latest/dialog/
	+ update config.guess, config.sub