+20130112
+ + correct prototype in manpage for vid_puts.
+ + drop ncurses/tty/tty_display.h, ncurses/tty/tty_input.h, since they
+ are unused in the current driver model.
+ + modify mvcur to use stdout except when called within the ncurses
+ library.
+ + modify vidattr and vid_attr to use stdout as documented in manpage.
+ + amend changes made to buffering in 20120825 so that the low-level
+ putp() call uses stdout rather than ncurses' internal buffering.
+ The putp_sp() call does the same, for consistency (Redhat #892674).
+