Thread safety of client libs

[Samuel Meder <meder@mcs.anl.gov>]

Hi

I've been looking at the thread safety of the client libs. From
searching the mail archives I gather that thread safety is provided on
a per handle/session basis (all operations on a handle have to be
serialized). These posts were from over a year ago and I'm wondering
if anything has changed in the mean time ?
I'm aware of the Mozilla SDK, but can't really use it since we want
to keep the number of dependencies on external packages at a minimum. 

Thanks

/Sam Meder