Updated dialog to 1.3.20160424.

2016/04/24
+ fix a special case in drawing shadow on a line-drawing cell where the
  alternate-character set flag was lost (report by Martin Kravec).
+ fix a regression from 2015/05/13 changes for escaping; it is
  necessary to retain backslashes within quotes to make "\Z" escapes
  work (report by Marcin Krol).
+ fix test package for RPMs; changes in 2015 omitted symbolic links
  for the library.
+ fix typo in help message for "--buildlist" (report by Rihards Olups).
+ modified autoconf macros
  + CF_PROG_AR, CF_AR_FLAGS added to improve check for archive tool.
  + CF_LD_RPATH_OPT, change FreeBSD to use -Wl,-rpath rather than
    -rpath option.  According to FreeBSD #178732, either works since
    FreeBSD 4.x; however scons does not accept anything except the
    -Wl,-rpath form.
  + CF_WITH_NCURSES_ETC, change from ncurses to check for pthreads
    dependency.

(wiz)