read_write_mutex missing in release?

[huafbauer]

Is there a reason for removing this files
from the release package for at least version 1.33.1?
(They are even tagged for version 1.33.1)

read_write_mutex.hpp
http://cvs.sourceforge.net/viewcvs.py/boost/boost/boost/thread/read_write_mutex.hpp?rev=1.9&view=log

read_write_lock.hpp
http://cvs.sourceforge.net/viewcvs.py/boost/boost/boost/thread/detail/read_write_lock.hpp?rev=1.8&view=log

read_write_mutex.cpp
http://cvs.sourceforge.net/viewcvs.py/boost/boost/libs/thread/src/read_write_mutex.cpp?rev=1.23&view=log

[me22]

Logged In: YES 
user_id=509832

As I understand it, read_write_mutex is broken and the
threads library is orphaned.

[mclow]

Logged In: YES 
user_id=131412

The CVS checkin comment for these files says: "Remove the broken 
read_write_mutex". 

Douglas Gregor wrote on the mailing list (on Wed, 09 Nov 2005, in the 1.33.1 
beta description):
"* Thread library: read_write_mutex has been removed due to problems
      with deadlocks."