Merge pull request Intel-bigdata#31 from jaloren/master

fixes Intel-bigdata#30 where unbound variables cause the shell script to exit.

Author: colorant

bin/hibench-config.sh

@@ -27,6 +27,14 @@ export HIBENCH_VERSION="2.2"
 HADOOP_EXECUTABLE= 
 HADOOP_CONF_DIR=
 HADOOP_EXAMPLES_JAR=
+HADOOP_HOME=`printenv HADOOP_HOME`
+HADOOP_EXECUTABLE=`printenv HADOOP_EXECUTABLE`
+HIBENCH_HOME=`printenv HIBENCH_HOME`
+HIBENCH_CONF=`printenv HIBENCH_CONF`
+HIVE_HOME=`printenv HIVE_HOME`
+MAHOUT_HOME=`printenv MAHOUT_HOME`
+NUTCH_HOME=`printenv NUTCH_HOME`
+DATATOOLS=`printenv DATATOOLS`
 
 if [ -n "$HADOOP_HOME" ]; then
 	HADOOP_EXECUTABLE=$HADOOP_HOME/bin/hadoop