+20180721
+ + build-fixes for gcc8.
+ + corrected acsc for wy50 -TD
+ + add wy50 and wy60 shifted function-keys as kF1 to kF16 -TD
+ + remove ansi+rep mis-added to interix in 2018-02-23 -TD
+
+20180714
+ + add enum, regex examples to test/demo_forms
+ + add configure check for pcre-posix library to help with MinGW port.
+
+20180707
+ + build-fixes for gcc8.
+ + correct order of WINDOW._ttytype versus WINDOW._windowlist in
+ report_offsets.
+ + fix a case where tiparm could return null if the format-string was
+ empty (Debian #902630).
+
+20180630
+ + add acsc string to vi200 (Nibby Nebbulous)
+ add right/down-arrow to vi200's acsc -TD
+ + add "x" to tput's getopt string so that "tput -x clear" works
+ (Nicholas Marriott).
+ + minor fixes prompted by anonymous report on stack overflow:
+ + correct order of checks in _nc_get_locale(), for systems lacking
+ locale support.
+ + add "#error" in a few places to flag unsupported configurations
+