ensure tests are failing when build scripts fail

tests/unit/data/travis/apc-setup.sh

-#!/bin/sh
+#!/bin/sh -e
 
 if [ "$(expr "$TRAVIS_PHP_VERSION" "<" "5.5")" -eq 1 ]; then
 	echo "extension = apc.so" >> ~/.phpenv/versions/$(phpenv version-name)/etc/php.ini

tests/unit/data/travis/cubrid-setup.sh

-#!/bin/sh
+#!/bin/sh -e
 #
 # install CUBRID DBMS
 
@@ -71,7 +71,7 @@ install_pdo_cubrid() {
     return $?
 }
 
-install_pdo_cubrid > ~/pdo_cubrid.log || ( echo "=== PDO CUBRID BUILD FAILED ==="; cat ~/pdo_cubrid.log )
+install_pdo_cubrid > ~/pdo_cubrid.log || ( echo "=== PDO CUBRID BUILD FAILED ==="; cat ~/pdo_cubrid.log ) && exit 1
 
 echo ""
 echo "Installed CUBRID PDO $CUBRID_PDO_VERSION"

tests/unit/data/travis/init-apps.sh

-#!/bin/sh
+#!/bin/sh -e
 
 if (php --version | grep -i HipHop > /dev/null); then
   echo "skipping application init on HHVM"

tests/unit/data/travis/memcache-setup.sh

-#!/bin/sh
+#!/bin/sh -e
 
 if (php --version | grep -i HipHop > /dev/null); then
   echo "skipping memcache on HHVM"

tests/unit/data/travis/mongodb-setup.sh

-#!/bin/sh
+#!/bin/sh -e
 #
 # install mongodb
 

tests/unit/data/travis/setup-apps.sh

-#!/bin/sh
+#!/bin/sh -e
 
 if (php --version | grep -i HipHop > /dev/null); then
   echo "skipping application setup on HHVM"

tests/unit/data/travis/sphinx-setup.sh

-#!/bin/sh
+#!/bin/sh -e
 SCRIPT=$(readlink -f "$0")
 CWD=$(dirname "$SCRIPT")