Nightly script can now enable race-detection

nightly.sh

@@ -29,6 +29,11 @@ SMTP=$1
 USER=$2
 PASSWORD=$3
 TO=$4
+RACE_ENABLED=$5
+
+if [ -n "$RACE_ENABLED" ]; then
+    race="-x"
+fi
 
 REPO_DIR=`mktemp -d`
 echo "Using $REPO_DIR for all work..."
@@ -41,7 +46,7 @@ git clone https://github.com/influxdb/influxdb.git
 
 cd $GOPATH/src/github.com/influxdb/influxdb
 VERSION="$MASTER_VERSION-nightly-`git log --pretty=format:'%h' -n 1`"
-NIGHTLY_BUILD=true ./package.sh $VERSION
+NIGHTLY_BUILD=true ./package.sh $race $VERSION
 
 if [ $? -ne 0 ]; then
     # Send notification e-mail.