Exclude *.java from being added to library jars (#992)

Author: osana

build.gradle

@@ -85,6 +85,11 @@ def RELEASE_MODULES = ["services",
                        "services-turf"]
 
 subprojects { subproject ->
+
+  tasks.withType(Jar) {
+    exclude "**/*.java"
+  }
+
   if (TESTABLE_MODULES.contains(subproject.name)) {
     subproject.apply plugin: "com.vanniktech.android.junit.jacoco"
     subproject.apply from: "${rootDir}/gradle/jacoco.gradle"