Android fixed preloading of iconv shared object

android/src/org/pEp/jniadapter/AndroidHelper.java

@@ -144,6 +144,7 @@ public class AndroidHelper {
         System.loadLibrary("gpg-error");
         System.loadLibrary("assuan");
         System.loadLibrary("gpgme");
+        System.loadLibrary("iconv");
 
         // With lots of log 
         nativeSetup( "9:"+new File(c.getFilesDir(), "gpgme.log").getAbsolutePath());