[xml] windows multi-threading

[Rich Salz <rsalz datapower com>]

In threads.c for the windows platform it might be better to use
InterlockedIncrement on run_once_init so that you get better pthread_once
semantics.  See this link for details
http://pluto.cdpa.nsysu.edu.tw/sourceware/pthreads-win32/sources/pthreads-snap-2005-01-25/pthread_once.c

-- 
Rich Salz                  Chief Security Architect
DataPower Technology       http://www.datapower.com
XS40 XML Security Gateway  http://www.datapower.com/products/xs40.html