[fix] added several config changes to travis config

.travis.yml

@@ -1,5 +1,11 @@
 language: java
+dist: trusty
+sudo: false
+addons:
+  apt:
+    packages:
+      - ant-optional
 jdk:
-  - oraclejdk7
+  - openjdk7
 script:
  - "ant -buildfile build.xml clean check jar unittest"

core/build.xml

@@ -88,7 +88,7 @@
 	<target name="unittest" description="Execute unit tests" depends="build">
 		<echo>Building unit tests</echo>
 		<mkdir dir="${build-test.dir}"/>
-		<javac debug="true" srcdir="${src-test.dir}" destdir="${build-test.dir}" classpathref="test-classpath"/>
+		<javac debug="true" srcdir="${src-test.dir}" destdir="${build-test.dir}" classpathref="test-classpath" includeantruntime="false"/>
 		
 		<echo>Running unit tests</echo>
 		<mkdir dir="${tmp.dir}/rawtestoutput"/>