Update x11vnc to 0.9.13.

Update x11vnc to 0.9.13.

New in the 0.9.13 x11vnc release:

	Improved support for non-X11 touchscreen devices (e.g. handheld or
		cell phone) via Linux uinput input injection.  Additional
		tuning parameters are added. TSLIB touchscreen calibration
		is supported. Tested on Qtmoko Neo Freerunner.

		A tool, misc/uinput.pl, is provided to diagnose uinput
		behavior on new devices.

		The env. vars. X11VNC_UINPUT_BUS and X11VNC_UINPUT_VERSION
		are available if leaving them unset does not work.

	The Linux uinput non-X11 input injection can now be bypassed:
		events can be directly written to the /dev/input/event
		devices specified by the user (direct_abs=..., etc.)

		A -pipeinput input injection helper script,
		misc/qt_tslib_inject.pl is provided as a tweakable
		non-builtin direct input injection method.

	The list of new uinput parameters for the above two features is:
		pressure, tslib_cal, touch_always, dragskip, btn_touch;
		direct_rel, direct_abs, direct_btn, direct_key.

	The included SSL enabled Java VNC Viewers now handle Mouse
		Wheel events.

  miscellaneous new features and changes:

	In -reflect mode, the libvncclient connection can now have
		the pixel format modified via the environment
		variables X11VNC_REFLECT_bitsPerSample,
		X11VNC_REFLECT_samplesPerPixel, and
		X11VNC_REFLECT_bytesPerPixel

	In -create mode the following environment variables are added
		to fine tune the behavior: FIND_DISPLAY_NO_LSOF:
		do not use lsof(1) to try to determine the Linux VT,
		FIND_DISPLAY_NO_VT_FIND: do not try to determine the
		Linux VT at all, X11VNC_CREATE_LC_ALL_C_OK: do not bother
		undoing the setting LC_ALL=C that the create_display
		script sets.  The performance of the -create script
		has been improved for large installations (100's of
		user sessions on one machine.)

	In -unixpw mode, one can now Tab from login: to Password.

	An environment variable, X11VNC_SB_FACTOR, allows one to scale
		the -sb screenblank sleep time from the default 2 secs.

	In -rawfb mode, a bug is fixed in setting the number of bits
		per pixel.

	Documented that -grabkbd is no longer working with some/most
		window managers (it can prevent resizing and menu posting.)

	The macosx deprecated interface GetMainDevice() call is removed.
		Compile with -DX11VNC_MACOSX_USE_GETMAINDEVICE if needed
		for an old macosx version...

	Miscellaneous code cleanup.