Added multithread.c

docs/examples/Makefile.am

@@ -5,7 +5,8 @@
 AUTOMAKE_OPTIONS = foreign no-dependencies
 
 EXTRA_DIST = README curlgtk.c sepheaders.c simple.c postit.c \
-	     win32sockets.c persistant.c ftpget.c Makefile.example
+	     win32sockets.c persistant.c ftpget.c Makefile.example \
+	     multithread.c
 
 all:
 	@echo "done"