ncurses 6.1 - patch 20181124

ncurses 6.1 - patch 20181124

+ check --with-fallbacks option to ensure there is a value, and add
  the fallback information to top-level Makefile summary.
+ add some traces in initialization to show whether a fallback entry is
  used.
+ build-fix for test/movewindow with ncurses-examples on Solaris.
+ add "-l" option to test/background, to dump screen contents in a form
  that lets different curses implementations be compared.
+ modify the initialization checks for mouse so that the xterm+sm+1006
  block will work with terminal descriptions not mentioning xterm
  (report by Tomas Janousek).