Add helper bash functions.

analyze_utils.sh

@@ -0,0 +1,11 @@
+#!/bin/bash
+
+# cancelled() method takes a CSV as input and outputs the number of
+# TaskGraphs that have been cancelled.
+cancelled() {
+    if [[ "$1" == *.csv ]]; then
+        cat $1 | grep "TASK_CANCEL" | awk -F, "{print $6}" | sort | uniq | wc -l
+    else
+	echo "cancelled() takes a CSV file as input."
+    fi
+}