Thread class

[David Durham]

  In moving away from my little libraries to CommonC++ I failed to find 
a 'wait' method for ost::Thread.  Does this happen in the destructor? 
Normally, the proper way to handle threads is to create them, then do 
whatever, then wait for them to die (most likely, after just having set 
a kill flag within the thread)...   So I would expect to call something 
like thread->wait() before destroying it, even though the destroy would 
do it if I didn't.   And moreover, the thread object should be reusable 
by calling start after a thread has been terminated.... I know that the 
current implement creates the thread on construction, but what I did, 
was to do all the work in the start method, the constructor did 
little.... but the thread object could be used multiple times... I know 
this isn't a big deal.. I'm just flapping my gums here...  But I did 
expect to see a wait() method; useful for some kind of syncronization if 
I use a local variable for the thread object insteading of new-ing one 
and calling delete where I would call wait.

-- Davy