[win] Handle focus in/out events

This fixes the errant console behavior (cursor wasn't showing because QF
thought it had never received focus).

config.d/windows.m4

@@ -12,8 +12,8 @@ case "$host_os" in
 					CPPFLAGS="$CPPFLAGS $CFLAGS"
 					;;
 			esac
-			SYSTYPE=WIN32
 		fi
+		SYSTYPE=WIN32
 		AC_DEFINE(NEED_GNUPRINTF)
 		endian="little"
 		;;

libs/video/targets/in_win.c

@@ -776,9 +776,13 @@ MainWndProc (HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
 		uMsg = WM_MOUSEWHEEL;
 
 	switch (uMsg) {
+		case WM_SETFOCUS:
+			Key_FocusEvent (1);
+			break;
 		case WM_KILLFOCUS:
 			if (modestate == MS_FULLDIB)
 				ShowWindow (win_mainwindow, SW_SHOWMINNOACTIVE);
+			Key_FocusEvent (0);
 			break;
 		case WM_CREATE:
 			break;