[#17] Made dprintf() thread safe on Unix. Achieved via a pthread mutex, if pthreads is available.  Note code already existed to do the same thing on Win32.
[#17] Made dprintf() thread safe on Unix.
Achieved via a pthread mutex, if pthreads is available.  Note code
already existed to do the same thing on Win32.

djw8605/condor,zhangzhehust/htcondor,neurodebian/htcondor,htcondor/htcondor,djw8605/htcondor,htcondor/htcondor,htcondor/htcondor,neurodebian/htcondor,zhangzhehust/htcondor,zhangzhehust/htcondor,htcondor/htcondor,clalancette/condor-dcloud,neurodebian/htcondor,clalancette/condor-dcloud,htcondor/htcondor,zhangzhehust/htcondor,mambelli/osg-bosco-marco,htcondor/htcondor,djw8605/htcondor,djw8605/condor,djw8605/htcondor,neurodebian/htcondor,clalancette/condor-dcloud,mambelli/osg-bosco-marco,htcondor/htcondor,neurodebian/htcondor,neurodebian/htcondor,bbockelm/condor-network-accounting,zhangzhehust/htcondor,zhangzhehust/htcondor,clalancette/condor-dcloud,djw8605/condor,clalancette/condor-dcloud,djw8605/htcondor,bbockelm/condor-network-accounting,djw8605/condor,zhangzhehust/htcondor,bbockelm/condor-network-accounting,mambelli/osg-bosco-marco,mambelli/osg-bosco-marco,bbockelm/condor-network-accounting,djw8605/htcondor,mambelli/osg-bosco-marco,djw8605/htcondor,djw8605/condor,djw8605/htcondor,neurodebian/htcondor,mambelli/osg-bosco-marco,mambelli/osg-bosco-marco,djw8605/condor,mambelli/osg-bosco-marco,bbockelm/condor-network-accounting,djw8605/condor,djw8605/htcondor,djw8605/htcondor,clalancette/condor-dcloud,neurodebian/htcondor,zhangzhehust/htcondor,bbockelm/condor-network-accounting,zhangzhehust/htcondor,djw8605/condor,bbockelm/condor-network-accounting,htcondor/htcondor,neurodebian/htcondor,clalancette/condor-dcloud,bbockelm/condor-network-accounting