gzstream support in Rocks

Got the gzstream to work with the system.
Need to check if it works with the condor system.
If it doesn't, just manually run the thing to generate traces.

To add support for gzsteam,
include "gzstream.h" in Profiler.hh file
then declear an ogzstream instance

later in init function of Profiler.cc,
use the ogzstream instance to open a file.

the file needs to be closed when simulation is done and
outputing the stats.