+20160220
+ + modify test/configure script to check for pthread dependency of
+ ncursest or ncursestw library when building ncurses examples, e.g.,
+ in case weak symbols are used.
+ + modify configure macro for shared-library rules to use -Wl,-rpath
+ rather than -rpath to work around a bug in scons (FreeBSD #178732,
+ cf: 20061021).
+ + double-width multibyte characters were not counted properly in
+ winsnstr and wins_nwstr (report/example by Eric Pruitt).
+ + update config.guess, config.sub from
+ http://git.savannah.gnu.org/cgit/config.git
+
+20160213
+ + amend fix for _nc_ripoffline from 20091031 to make test/ditto.c work
+ in threaded configuration.
+ + move _nc_tracebits, _tracedump and _tracemouse to curses.priv.h,
+ since they are not part of the suggested ABI6.
+