The Q.932 dissector doesn't need to include <string.h>; the Q.932 ROS

The Q.932 dissector doesn't need to include <string.h>; the Q.932 ROS
dissector does.

The fix to the Makefile to generate packet-q932-ros.c changed the
protocol name in some cases; change it uniformly.

git-svn-id: http://anonsvn.wireshark.org/wireshark/trunk@21622 f5534014-38df-0310-8fa8-9805f1628bb7