strike most poll.h, use winsock2.h on windows

src/demo/reel.c

@@ -1,4 +1,3 @@
-#include <poll.h>
 #include <errno.h>
 #include <fcntl.h>
 #include <unistd.h>

src/lib/fd.c

@@ -1,4 +1,3 @@
-#include <poll.h>
 #include <fcntl.h>
 #include <unistd.h>
 #include <pthread.h>

src/lib/input.c

@@ -1,7 +1,6 @@
 #include "input.h"
 #include "internal.h"
 #include "notcurses/direct.h"
-#include <poll.h>
 #include <ncurses.h> // needed for some definitions, see terminfo(3ncurses)
 #include <term.h>
 #include <ctype.h>

src/lib/internal.h

@@ -8,10 +8,13 @@ extern "C" {
 #include "version.h"
 #include "builddef.h"
 
+#if defined(__MINGW64__)
+#include <winsock2.h>
+#else
 #include <poll.h>
+#endif
 #include <term.h>
 #include <time.h>
-#include <poll.h>
 #include <stdio.h>
 #include <stdint.h>
 #include <unistd.h>

src/lib/notcurses.c

@@ -4,7 +4,6 @@
 #include "egcpool.h"
 #include "internal.h"
 #include <ncurses.h> // needed for some definitions, see terminfo(3ncurses)
-#include <poll.h>
 #include <zlib.h>
 #include <time.h>
 #include <term.h>