Modify install script

Finish making the install script accept a different install location. There is a
weird bug where when the beamformer is not installed to the production site of
/home/groups/flag/hash that the Makefile incorrectly uses the wrong CUDA path.
This was overcome temporarily by passing the $CUDA path into the Makefile.

install

@@ -11,7 +11,7 @@ fi
 # Set default install location if prefix is not in environment
 if [ -z ${prefix+x} ]
 then
-    prefix=/home/groups/flag/hash/
+    prefix=/home/groups/flag/hash
 fi
 echo "Installing FLAG to ${prefix}"
 
@@ -79,8 +79,8 @@ echo "========================================"
 echo "Navigating to $BEAM_SRC"
 cd $BEAM_SRC
 make clean
-make
-make install prefix=$prefix
+make CUDA_DIR=$CUDA
+make install prefix=$prefix CUDA_DIR=$CUDA
 echo "========================================"
 echo