[php-maint] Bug#770105: sed in wheezy doesn't have -z option

[Aaron Schrab]

At 19:18 -0500 18 Nov 2014, I wrote:
>Even with the above it just echoes the touch command rather than 
>actually running it, so the `echo` needs to be removed as well.

And a layer of quotes should be removed from the xargs placeholder as 
well, or just remove the placeholder altogether since xargs will 
automatically put the arguments at the end.  In either case, xargs is 
responsible for quoting the arguments that it adds.