Refine compileJava task(closes #805)
Refine compileJava task(closes #805)

russel/incubator-groovy,russel/groovy,russel/incubator-groovy,russel/groovy,apache/incubator-groovy,shils/incubator-groovy,paulk-asert/incubator-groovy,apache/groovy,traneHead/groovy-core,traneHead/groovy-core,russel/groovy,shils/groovy,jwagenleitner/incubator-groovy,paulk-asert/groovy,jwagenleitner/groovy,shils/groovy,shils/groovy,russel/incubator-groovy,russel/groovy,paulk-asert/groovy,jwagenleitner/incubator-groovy,apache/groovy,jwagenleitner/groovy,traneHead/groovy-core,paulk-asert/incubator-groovy,armsargis/groovy,armsargis/groovy,paulk-asert/incubator-groovy,armsargis/groovy,apache/incubator-groovy,paulk-asert/groovy,apache/groovy,jwagenleitner/groovy,paulk-asert/groovy,paulk-asert/incubator-groovy,apache/incubator-groovy,apache/groovy,shils/incubator-groovy,armsargis/groovy,russel/incubator-groovy,apache/incubator-groovy,jwagenleitner/incubator-groovy,shils/incubator-groovy,traneHead/groovy-core,shils/incubator-groovy,jwagenleitner/incubator-groovy,paulk-asert/incubator-groovy,shils/groovy,jwagenleitner/groovy