+ fix errata for ncurses-howto (report by Damien Ruscoe).
+ fix a few places in configure/build scripts where DESTDIR and rpath
were combined (report by Thomas Klausner).
+ merge current st description (report by Harry Gindi) -TD
+ modify flash capability for linux and wyse entries to put the delay
between the reverse/normal escapes rather than after -TD
+ modify program tabs to pass the actual tty file descriptor to
setupterm rather than the standard output, making padding work
consistently.
+ explain in clear's manual page that it writes to stdout.
+ add special case for verbose debugging traces of command-line
utilities which write to stderr (cf: 20161126).
+ remove a trace with literal escapes from skip_DECSCNM(), added in
20161203.
+ update config.guess, config.sub from
http://git.savannah.gnu.org/cgit/config.git
+ in-progress changes to win_driver.c to implement output without
allocating a console-buffer. This uses a pre-existing environment
variable NCGDB used by Juergen Pfeifer for debugging (prompted by
discussion with Erwin Waterlander regarding Console2, which hangs
when reading in an allocated console-buffer).
+ add -t option to gdc.c, and modify to accept "S" to step through the
scrolling-stages.
+ regenerate NCURSES-Programming-HOWTO.html to fix some of the broken
html emitted by docbook.
