LOGCXX-257 and 0.10.0 RC 3

[Curt Arnold <ca...@apache.org>]

Had to rewrite a substantial bit of log4cxx in the release process,  
but I didn't see another way of getting TelnetAppender::close() not to  
hang on Unix.  I'm going to cut 0.10.0 RC3 later today after I get  
some sleep.  I would appreciate any feedback on the new code,  
particularly any testing of network based appenders.  The unit tests  
pass on Mac OS/X, Ubuntu 6.06 and WinXP and I've done quick sanity  
testing of TelnetAppender on Mac OS/X.

The timeline is pretty quick for 0.10.0.  For reasons, I can't go into  
here (but I have on private@logging.apache.org), a log4cxx 0.10.0  
release must either occur before next Thursday (April 3rd) or will  
have to wait until April 17th or so.  That is still more than the  
required 72 hours, but not all that much more.  A timely reviews and  
feedback of 0.10.0 RC3 when it becomes available will be crucial in  
trying to meet that deadline.  I don't expect any code changes between  
before cutting the release candidate, but there will be some minor  
cosmetic changes.