PQM mis-encoding subject line

[Robey Pointer]

A recent PQM email had a scrambled UTF-8 subject line.  Looks like  
it's encoding in UTF-8 but marking it as Latin-1.

> Subject: =?iso-8859-1?q? 
> Rev_1816=3A_=28erik_b=C3=A5gfors=29_remove_duplic?=
> 	=?iso-8859-1?q?ate_lines_in_help_and_NEWS_=28bug_=2350561=29_in_/h?=
> 	=?iso-8859-1?q?ome/pqm/archives/thelove/bzr/+trunk/?=


(Yes, that's insanely ugly, but that is actually the right way to do  
it.  The name of the encoding is the bit that's wrong.)

robey