fixing some javac/javadoc warnings

gradle/compile/java.gradle

@@ -33,3 +33,11 @@ task javadocJar(type: Jar, dependsOn: javadoc) {
 artifacts {
     archives sourcesJar, javadocJar
 }
+
+tasks.withType(JavaCompile) {
+    options.compilerArgs << '-Xlint:all'
+}
+
+javadoc {
+    options.addStringOption('Xdoclint:none', '-quiet')
+}

io-archive-ar/src/main/java/module-info.java

@@ -1,4 +1,4 @@
 module org.xbib.io.archive.ar {
     exports org.xbib.io.archive.ar;
-    requires org.xbib.io.archive;
+    requires transitive org.xbib.io.archive;
 }

io-archive-ar/src/main/java/org/xbib/io/archive/ar/ArArchiveEntry.java

@@ -24,7 +24,6 @@ import java.util.Date;
  * can read but not write the GNU variant and doesn't support
  * the BSD variant at all.
  *
- * <a href="http://www.freebsd.org/cgi/man.cgi?query=ar&sektion=5">ar man page</a>
  */
 public class ArArchiveEntry implements ArchiveEntry {
 

io-archive-cpio/src/main/java/module-info.java

@@ -1,4 +1,4 @@
 module org.xbib.io.archive.cpio {
     exports org.xbib.io.archive.cpio;
-    requires org.xbib.io.archive;
+    requires transitive org.xbib.io.archive;
 }

io-codec/src/main/java/org/xbib/io/codec/ar/ArConnection.java

@@ -27,6 +27,7 @@ public class ArConnection extends URLConnection implements Connection<ArSession>
      * the object referenced by the URL is not created.
      *
      * @param url the specified URL.
+     * @throws URISyntaxException if URI is invalid
      */
     public ArConnection(URL url) throws URISyntaxException {
         super(url);