Try to speedup and robust Jython build on travis ci.

.travis.yml

@@ -28,14 +28,13 @@ matrix:
 
 before_install:
   - ci/before_install.sh
-  - source $HOME/myvirtualenv/bin/activate
 
 install:
   - if [ "$JDBC_DRIVER" == "org.jaydebeapi:mockdriver:1.0-SNAPSHOT" ]; then (cd mockdriver && mvn install) ;fi
   - if [ -n "$JDBC_DRIVER" ]; then cp ci/dot_jip $VIRTUAL_ENV/.jip && pip install jip==0.7 && jip install $JDBC_DRIVER && export CLASSPATH=$VIRTUAL_ENV/javalib/* ;fi # TODO: Fix jip to search for local maven repo without twaking .jip
+  - source $HOME/myvirtualenv/bin/activate
   - pip install -e .
   - pip install -r test-requirements.txt
 
 script:
-  - export CLASSPATH=$VIRTUAL_ENV/javalib/*
   - python test/testsuite.py $TESTNAME