Changes since 1.3-20190211
2020/02/28
+ updated configure-macros, to work around ncurses vs xcode's c99 -W
+ update config.guess
2019/12/31
+ updated configure-macros.
+ update config.guess
2019/12/10
+ correct rc-file lookup of "default" color (report by Grady Martin,
cf: 2019/09/24).
+ fix several issues in the sample scripts reported by shellcheck.
+ fix a few spelling errors reported by codespell (report by Jens
Schleusener).
+ correct check for return-value of isblank(), which is not necessarily
0/1 (report/patch by Paul Cercueil, Peter Korsgaard, cf: 2018/05/31).
2019/12/09
+ amend change for parsing command-options before calling init_dialog,
to handle --no-shadow, etc., which are initialized in init_dialog
(report by Paul Cercueil, cf: 2018/06/21).
+ add dlg_trace_va_msg to manpage, symbol files.
2019/11/10
+ improve layout of several widgets' data area when maximizing.
+ modify dselect/fselect to work with autosizing (Debian #915949).
+ add error messages from dlg_exiterr() to trace file.
+ improve manual page description of escaping in key-bindings.
+ modify inputmenu to recognize the "Cancel" button and keys bound to
that feature while editing a renamed menu item.
+ revert one change, in form.c to the --last-key feature (Debian
#942025).
+ correct ordering of libraries in configure-script, which appended
in a case where it should have prepended.
+ update config.guess, config.sub
2019/09/26
+ improve dialog-config script's filtering of -L options using the
linker default directories.
+ improve dialog-config script, adding a -L option corresponding to
the configure --libdir option if it would be a duplicate (report by
Andrew Kosteltsev).
+ build-fix for configure --disable-trace
+ updated pt.po from
http://translationproject.org/latest/dialog/
2019/09/24
+ allow for underline- and reverse-video flags in the ".rc" file
(integrated patch by Richard Robbins).
2019/08/08
+ amend change to --last-key feature to eliminate an unnecessary
separator (report by Gabriele Balducci).
2019/08/06
+ extend --last-key feature to the remaining widgets which have
ok/cancel buttons, and add logic to map keys which happen to be
bound to ok/extra/cancel/help to simulate a button-press on the
corresponding button (report by "sgewrk").
2019/08/01
+ further fixes for dialog-config.in (report by Andrew Kosteltsev).
2019/07/28
+ modify dialog-config.in so that setting prefix or exec-prefix to
a given value with --prefix=VALUE or --exec-prefix=VALUE has the
expected result of changing bindir, etc.
+ correct substitution for $LIBS value in dialog-config.in (report by
Andrew Kosteltsev).
2019/07/24
+ modify dlg_will_resize() and dlg_result_key() functions to reduce
the chance that dialog exits on a SIGWINCH (Debian #930775).
+ make test-package for the development headers/library
+ add --libs-only-L, etc., to dialog-config script (prompted by
discussion with Andrew Kosteltsev).
+ fix a memory leak in gauge widget (Andrew Kosteltsev).
+ minor fix for CF_GCC_WARNINGS
+ update config.guess, config.sub
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