x11vnc: XBell events, -nofb, -notruecolor, misc. cleaning

ChangeLog

-2003-11-07  Karl Runge
+2003-12-08  Karl Runge <runge@karlrunge.com>
+	* add check for XKEYBOARD extension in configure.ac
+	* support XBell events (disable: "-nobell"), "-nofb" in x11vnc
+
+2003-11-07  Karl Runge <runge@karlrunge.com>
 	* support "-inetd", "-noshm", "-flipbyteorder" in x11vnc
 
 2003-10-26  Johannes E. Schindelin  <Johannes.Schindelin@gmx.de>

configure.ac

@@ -33,7 +33,11 @@ fi
 # Checks for X libraries
 HAVE_X="false"
 AC_PATH_XTRA
+AH_TEMPLATE(HAVE_XKEYBOARD, [XKEYBOARD extension build environment present])
 if test "$X_CFLAGS" != "-DX_DISPLAY_MISSING"; then
+	AC_CHECK_LIB(X11, XkbSelectEvents,
+		[AC_DEFINE(HAVE_XKEYBOARD)], ,
+		$X_LIBS $X_PRELIBS -lX11 $X_EXTRA_LIBS)
 	AC_CHECK_LIB(Xtst, XTestFakeKeyEvent, HAVE_XTEST="true",
 		HAVE_XTEST="false",
 		$X_LIBS $X_PRELIBS -lX11 -lXext $X_EXTRA_LIBS)

contrib/ChangeLog

+2003-12-08  Karl Runge <runge@karlrunge.com>
+	* add Xbell support using XKEYBOARD extension (disable: -nobell)
+	* add "-nofb" to disable framebuffer, i.e. mouse + keyboard only (!)
+	* add "-notruecolor" to force indexed 8bpp color (when 8bpp) 
+	* make alias "-forever" for "-many"
+
 From Karl (x11vnc's father) on Apr 2, 2003:
 	
 New option -nocursor to not display the vncviewer local cursor if user