Comment 3 for bug 1190240

Actually, it looks like XXX was present in 1.0.9. It seems to have disappeared in 1.0.17.

```
marca@marca-mac:~/src$ cat look_for_memcached_server_instance_st.sh
#!/bin/sh

for ver in 1.0.7 1.0.8 1.0.9 1.0.10 1.0.11 1.0.12 1.0.13 1.0.14 1.0.15 1.0.16 1.0.17 1.0.18; do
  echo "=================== $ver ================="
  wget -q https://launchpad.net/libmemcached/1.0/$ver/+download/libmemcached-$ver.tar.gz
  tar xf libmemcached-$ver.tar.gz
  grep -l -r 'memcached_server_instance_st' libmemcached-$ver/libmemcached-1.0
done

marca@marca-mac:~/src$ ./look_for_memcached_server_instance_st.sh
=================== 1.0.7 =================
libmemcached-1.0.7/libmemcached-1.0/callbacks.h
libmemcached-1.0.7/libmemcached-1.0/error.h
libmemcached-1.0.7/libmemcached-1.0/memcached.h
libmemcached-1.0.7/libmemcached-1.0/memcached.hpp
libmemcached-1.0.7/libmemcached-1.0/server.h
libmemcached-1.0.7/libmemcached-1.0/types.h
=================== 1.0.8 =================
libmemcached-1.0.8/libmemcached-1.0/callbacks.h
libmemcached-1.0.8/libmemcached-1.0/error.h
libmemcached-1.0.8/libmemcached-1.0/memcached.h
libmemcached-1.0.8/libmemcached-1.0/memcached.hpp
libmemcached-1.0.8/libmemcached-1.0/server.h
libmemcached-1.0.8/libmemcached-1.0/types.h
=================== 1.0.9 =================
libmemcached-1.0.9/libmemcached-1.0/callbacks.h
libmemcached-1.0.9/libmemcached-1.0/error.h
libmemcached-1.0.9/libmemcached-1.0/memcached.h
libmemcached-1.0.9/libmemcached-1.0/memcached.hpp
libmemcached-1.0.9/libmemcached-1.0/server.h
libmemcached-1.0.9/libmemcached-1.0/types.h
=================== 1.0.10 =================
libmemcached-1.0.10/libmemcached-1.0/callbacks.h
libmemcached-1.0.10/libmemcached-1.0/error.h
libmemcached-1.0.10/libmemcached-1.0/memcached.h
libmemcached-1.0.10/libmemcached-1.0/memcached.hpp
libmemcached-1.0.10/libmemcached-1.0/server.h
libmemcached-1.0.10/libmemcached-1.0/types.h
=================== 1.0.11 =================
libmemcached-1.0.11/libmemcached-1.0/callbacks.h
libmemcached-1.0.11/libmemcached-1.0/error.h
libmemcached-1.0.11/libmemcached-1.0/memcached.h
libmemcached-1.0.11/libmemcached-1.0/memcached.hpp
libmemcached-1.0.11/libmemcached-1.0/server.h
libmemcached-1.0.11/libmemcached-1.0/types.h
=================== 1.0.12 =================
libmemcached-1.0.12/libmemcached-1.0/callbacks.h
libmemcached-1.0.12/libmemcached-1.0/error.h
libmemcached-1.0.12/libmemcached-1.0/memcached.h
libmemcached-1.0.12/libmemcached-1.0/memcached.hpp
libmemcached-1.0.12/libmemcached-1.0/server.h
libmemcached-1.0.12/libmemcached-1.0/types.h
=================== 1.0.13 =================
libmemcached-1.0.13/libmemcached-1.0/callbacks.h
libmemcached-1.0.13/libmemcached-1.0/error.h
libmemcached-1.0.13/libmemcached-1.0/memcached.h
libmemcached-1.0.13/libmemcached-1.0/memcached.hpp
libmemcached-1.0.13/libmemcached-1.0/server.h
libmemcached-1.0.13/libmemcached-1.0/types.h
=================== 1.0.14 =================
libmemcached-1.0.14/libmemcached-1.0/callbacks.h
libmemcached-1.0.14/libmemcached-1.0/error.h
libmemcached-1.0.14/libmemcached-1.0/memcached.h
libmemcached-1.0.14/libmemcached-1.0/memcached.hpp
libmemcached-1.0.14/libmemcached-1.0/server.h
libmemcached-1.0.14/libmemcached-1.0/types.h
=================== 1.0.15 =================
libmemcached-1.0.15/libmemcached-1.0/callbacks.h
libmemcached-1.0.15/libmemcached-1.0/error.h
libmemcached-1.0.15/libmemcached-1.0/memcached.h
libmemcached-1.0.15/libmemcached-1.0/memcached.hpp
libmemcached-1.0.15/libmemcached-1.0/server.h
libmemcached-1.0.15/libmemcached-1.0/types.h
=================== 1.0.16 =================
libmemcached-1.0.16/libmemcached-1.0/callbacks.h
libmemcached-1.0.16/libmemcached-1.0/error.h
libmemcached-1.0.16/libmemcached-1.0/memcached.h
libmemcached-1.0.16/libmemcached-1.0/memcached.hpp
libmemcached-1.0.16/libmemcached-1.0/server.h
libmemcached-1.0.16/libmemcached-1.0/types.h
=================== 1.0.17 =================
=================== 1.0.18 =================
tar: Error opening archive: Failed to open 'libmemcached-1.0.18.tar.gz'
grep: libmemcached-1.0.18/libmemcached-1.0: No such file or directory
```