Added new indexing script

The old makefile based system was producing errors possibly
due to outdated version or other reasons.

So, created build_index.sh. Corresponding information added in
README.

Signed-off-by: Vidhoon Viswanathan <vidhoon@cs.utexas.edu>
Added condor script

condorizer-16G.py is a python script that automatically creates
condor description file and submits job.

Usage:
./condorizer-16G.py [executable] [args] [outfile]

For running relationfactory use it as follows:
./condorizer-16G.py $TAC_ROOT/bin/run.sh <config_file> <outfile>

It produces condor output files in the directory where it is run.

Credits:
Script borrowed from Yinon. Thanks!

Signed-off-by: Vidhoon Viswanathan <vidhoon@cs.utexas.edu>