Normalize shebangs to /usr/bin/perl

eg/abuse/blocking_debug_with_sub_coprocess

@@ -1,4 +1,4 @@
-#!/opt/i386-linux/perl/bin/perl -w
+#!/usr/bin/perl -w
 
 ## Submitted by Blair Zajac <blair@orcaware.com>
 

eg/abuse/timers

@@ -1,4 +1,4 @@
-#!/usr/local/lib/perl -w
+#!/usr/bin/perl -w
 
 use strict;
 use IPC::Run qw( :all );

eg/run_daemon

@@ -1,4 +1,4 @@
-#!/usr/local/bin/perl -w
+#!/usr/bin/perl -w
 
 ## An example of how to daemonize.  See the IPC::Run LIMITATIONS section for
 ## some reasons why this can be a bit dangerous.