Fix bad substitution error, add jip dependency and make scripts more robust.

.travis.yml

@@ -23,6 +23,7 @@ before_install:
 
 install:
   - pip install -r requirements.txt
+  - pi pinstall jip==0.7
   - pip install -e .
   - jip install org.xerial:sqlite-jdbc:3.7.2
   - jip install org.hsqldb:hsqldb:1.8.0.10

ci/before_install.sh

@@ -1,4 +1,5 @@
-#!/bin/sh
+#!/bin/bash
+set -e
 
 sudo apt-get update -qq
 sudo apt-get install -qq openjdk-7-jdk openjdk-7-jre

ci/before_install_jython.sh

@@ -1,4 +1,5 @@
-#!/bin/sh
+#!/bin/bash
+set -e
 
 pip install jip==0.7
 jip install org.python:$JYTHON

ci/before_install_nonjython.sh

@@ -1,4 +1,5 @@
-#!/bin/sh
+#!/bin/bash
+set -e
 
 cat requirements_python.txt >> requirements.txt
 ln -s $VIRTUAL_ENV ~/myvirtualenv

ci/install.sh

@@ -1,4 +1,6 @@
 #!/bin/sh
+set -e
+
 pip install jip==0.7
 
 install="${TRAVIS_BUILD_DIR}/ci/install_${BACKEND}.sh"