Fix compilation with newer automake

For some reason, this developer's automake no longer understands _SOURCES
lines anymore. Work around that.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>

client_examples/Makefile.am

@@ -19,7 +19,7 @@ SDLVIEWER=SDLvncviewer
 
 SDLvncviewer_CFLAGS=$(SDL_CFLAGS)
 
-SDLvncviewer_SOURCES=SDLvncviewer.c scrap.c
+SDLvncviewer_SOURCES=SDLvncviewer.c
 
 if HAVE_X11
 X11_LIB=-lX11

client_examples/SDLvncviewer.c

@@ -1,7 +1,7 @@
 #include <SDL.h>
 #include <signal.h>
 #include <rfb/rfbclient.h>
-#include "scrap.h"
+#include "scrap.c"
 
 struct { int sdl; int rfb; } buttonMapping[]={
 	{1, rfbButton1Mask},