Allow start_test to work when located outside of $CHPL_HOME/util/
Allow start_test to work when located outside of $CHPL_HOME/util/

The imports for chplenv and the virtualenv activation were expecting start_test
to be located in a $CHPL_HOME/util/. However, we copy start_test into the
examples directory so we need to manually add $CHPL_HOME/util to the path
before we can activate the virtualenv and chplenv

chizarlicious/chapel,CoryMcCartan/chapel,chizarlicious/chapel,chizarlicious/chapel,CoryMcCartan/chapel,chizarlicious/chapel,CoryMcCartan/chapel,chizarlicious/chapel,chizarlicious/chapel,chizarlicious/chapel,CoryMcCartan/chapel,CoryMcCartan/chapel,CoryMcCartan/chapel,CoryMcCartan/chapel