build.gradle: apply artifact normalization to all subprojects

Normalization is needed for reproducibility. Previously it was
applied only to `core`.

build.gradle

@@ -21,4 +21,20 @@ allprojects {
     }
 
     group = 'org.bitcoinj'
+
+    // Ensure standard artifacts in all projects are built reproducibly
+
+    tasks.withType(AbstractArchiveTask) {
+        preserveFileTimestamps = false
+        reproducibleFileOrder = true
+    }
+
+    tasks.withType(Jar) {
+        dirMode = 0755
+        fileMode = 0644
+    }
+
+    tasks.withType(Javadoc) {
+        options.noTimestamp = true
+    }
 }

core/build.gradle

@@ -52,20 +52,6 @@ protobuf {
     }
 }
 
-tasks.withType(AbstractArchiveTask) {
-    preserveFileTimestamps = false
-    reproducibleFileOrder = true
-}
-
-tasks.withType(Jar) {
-    dirMode = 0755
-    fileMode = 0644
-}
-
-tasks.withType(Javadoc) {
-    options.noTimestamp = true
-}
-
 tasks.withType(Test) {
     exclude 'org/bitcoinj/net/discovery/DnsDiscoveryTest*'
     testLogging {