define PY4J_JAR env var in test_java() if py4j is installed in .eggs dir
define PY4J_JAR env var in test_java() if py4j is installed in .eggs dir

MSLNZ/msl-loadlib,MSLNZ/msl-loadlib,MSLNZ/msl-loadlib,MSLNZ/msl-loadlib,MSLNZ/msl-loadlib