ncurses 6.0 - patch
20170930
+ fix a symbol conflict that made ncurses.c C/c menu not work with
Solaris xpg4 curses.
+ add refresh() call to dots_mvcur.c, needed to use mvcur() with
Solaris xpg4 curses after calling newterm().
+ minor fixes for configure script from work on ncurses-examples and
tin.
+ improve animation in test/xmas.c by adding a time-delay in blinkit().
+ modify several test programs to reflect that ncurses honors existing
signal handlers in initscr(), while other implementations do not.
+ modify bs.c to make it easier to quit.
+ change ncurses-examples to use attr_t vs chtype to follow X/Open
documentation more closely since Solaris xpg4-curses uses different
values for WA_xxx vs A_xxx that rely on attr_t being an unsigned
short. Tru64 aka OSF1, HPUX, AIX did as ncurses does, equating the
two sets.