new example proving that the debug callback works even when the multi

interface is used

docs/examples/Makefile.am

@@ -8,7 +8,8 @@ EXTRA_DIST = README curlgtk.c sepheaders.c simple.c postit2.c		\
  persistant.c ftpget.c Makefile.example multithread.c getinmemory.c	\
  ftpupload.c httpput.c simplessl.c ftpgetresp.c http-post.c		\
  post-callback.c multi-app.c multi-double.c multi-single.c		\
- multi-post.c fopen.c simplepost.c makefile.dj curlx.c https.c
+ multi-post.c fopen.c simplepost.c makefile.dj curlx.c https.c		\
+ multi-debugcallback.c
 
 all:
 	@echo "done"