ncurses 6.0 - patch 20171021

+ modify test/view.c to expand tabs using the ncurses library rather
  than in the test-program.
+ remove very old SIGWINCH example in test/view.c, just use KEY_RESIZE.
+ add -T, -e, -f -m options to "dots" test-programs.
+ fix a few typos in usage-messages for test-programs.