Avoiding Gradle deprecation warnings about registering invalid task inputs by not adding the checkstyle HTML report generation task in subprojects with no Java source files. (closes #736)
Avoiding Gradle deprecation warnings about registering invalid task inputs by not adding the checkstyle HTML report generation task in subprojects with no Java source files. (closes #736)

Fixes the GROOVY-8421 issue.

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