Initial commit of the dibas files and structure

There is a lot here and everything can really benefit from being cleaned
up. BeamformerBackend.py is the BYU generated spin-off of similar to
VegasBackend.py. It was developed trying to follow the similar
Backend.py paradigm as VEGAS and GUPPI however this was done with little
to no direction by GBO and so the changes BYU has made may have made
BeamformerBackend.py not compatible in DIBAS right off the bat without
some changes which is why for now everything is version controlled. In
gerneral though if DIBAS is still GBOs primary way to interface and
opearte as a facility instrument then BeamformerBackend.py and relevant
configuration scripts (e.g., dibas.conf and filter coefficients) may be
the only thing that needs to be version controlled.

Also, when BeamformerBackend was developed it built off a lot of how
VEGAS was accomplished and so there are also dependinces on the Vegas
scripts (many of which are not fully understood or worked out) and so
removing those may result in some errors.

.gitignore

+*.pyc
+*.o
+*.lo
+*.tmp
+*~
+*.swp
+*.out
+
+etc/logs
+etc/sys

dibas.bash

+#!/bin/bash
+
+export DIBAS_DIR=/home/groups/flag/dibas
+export HASHPIPE_DIR=/home/groups/flag/hash
+
+#export DIBAS_MAIN_DIR=/home/dibas
+export DIBAS_MAIN_DIR=/home/flag
+# source $DIBAS_MAIN_DIR/dibas-ve/bin/activate
+
+# Set environment variables for DIBAS, bash version
+#echo "Setting DIBAS environment.."
+
+# This is not installed at SHAO
+#export HEADAS=$DIBAS_DIR/pulsar/src/heasoft-6.6.2/x86_64-unknown-linux-gnu-libc2.3.4
+#alias ftools=". $HEADAS/headas-init.sh"
+
+PSR64=$DIBAS_DIR/pulsar
+DIBASLIBS=$DIBAS_DIR/dibaslibs
+OPT64=$DIBASLIBS
+export CUDA=/opt/local/cuda75
+#export CUDA=/usr/local/cuda
+
+#export DIBAS_DATA=/export/home/tank/scratch
+#export DIBAS_DATA=/lustre/gbtdata
+#export DIBAS_DATA=/lustre/gbtdata/TGBT16A_508_01/SIM
+#export DIBAS_DATA=/lustre/projects/flag
+export DIBAS_DATA=/lustre/flag
+export OVERLORD_DIR=$DIBAS_DIR/lib/python/scanOverlord
+
+# may be needed by various programs & scripts:
+export VEGAS=$DIBAS_DIR
+export GUPPI_DIR=$DIBAS_DIR/etc/config
+export VEGAS_DIR=$DIBAS_DIR/etc/config
+export CONFIG_DIR=$DIBAS_DIR/etc/config
+
+export PRESTO=$PSR64/src/presto
+export GBT1PREFIX=$DIBASLIBS
+export QWTLIB=$GBT1PREFIX/qwt-6.0.1/lib
+#export PATH=$HASHPIPE_DIR/bin:$PSR64/bin:$PRESTO/bin:$DIBAS_DIR/bin:$DIBAS_DIR/bin/x86_64-linux:$OPT64/bin:$DIBAS_DIR/lib/python:$PATH
+#export PATH=$HASHPIPE_DIR/bin:$PSR64/bin:$PRESTO/bin:$DIBAS_DIR/bin:$DIBAS_DIR/bin/x86_64-linux:$OPT64/bin:$DIBAS_MAIN_DIR/dibas-ve/lib/python2.7/site-packages:$DIBAS_DIR/lib/python:$PATH
+export PATH=$HASHPIPE_DIR/bin:$PSR64/bin:$PRESTO/bin:$DIBAS_DIR/bin:$DIBAS_DIR/bin/x86_64-linux:$OPT64/bin:$DIBAS_MAIN_DIR/flag-ve/lib/python2.7/site-packages:$DIBAS_DIR/lib/python:$PATH
+
+export DIBASPYTHON=$DIBASLIBS/lib/python2.6/site-packages:$DIBASLIBS/lib64/python2.6/site-packages
+
+# export PYTHONPATH=$PSR64/lib/python:$PRESTO/lib/python:$DIBAS_DIR/lib/python
+# export PYTHONPATH=$PSR64/lib/python:$PSR64/lib/python2.6/site-packages:$PRESTO/lib/python
+#export PYTHONPATH=$PSR64/lib/python:$PSR64/lib/python2.6/site-packages:$PRESTO/lib/python:$DIBASPYTHON:$OVERLORD_DIR/site-packages:$PYTHONPATH
+# export PYTHONPATH=$DIBAS_MAIN_DIR/dibas-ve/lib/python2.7/site-packages:$DIBAS_DIR/lib/python:$PSR64/lib/python:$PSR64/lib/python2.6/site-packages:$PRESTO/lib/python:$DIBASPYTHON:$PYTHONPATH
+#export PYTHONPATH=$DIBAS_MAIN_DIR/dibas-ve/lib/python2.7/site-packages:$DIBAS_DIR/lib/python:$PSR64/lib/python:$PRESTO/lib/python:$DIBASPYTHON:$PYTHONPATH:/usr/lib/python2.6/site-packages:$OVERLORD_DIR/site-packages
+export PYTHONPATH=$DIBAS_MAIN_DIR/flag-ve/lib/python2.7/site-packages:$DIBAS_DIR/lib/python:$PSR64/lib/python:$PRESTO/lib/python:$DIBASPYTHON:$PYTHONPATH:/usr/lib/python2.6/site-packages:$OVERLORD_DIR/site-packages
+
+export PGPLOT_DIR=$PSR64/pgplot
+export LD_LIBRARY_PATH=$PSR64/lib:$OPT64/lib:$PGPLOT_DIR:$PRESTO/lib:$GBT1PREFIX/lib:$QWTLIB:$CUDA/lib64:$HASH_DIR/lib:/users/jnybo/Documents/hashpipe_hello/Workshop/hashpipe_samples/src
+
+export TEMPO=$PSR64/src/tempo
+export TEMPO2=$PSR64/share/tempo2