Changes from Ant 1.10.10 TO Ant 1.10.11

Fixed bugs:

 * a race condition could lead to NullPointerExceptions when running
   tasks in parallel.
   Bugzilla Report 65316

 * fixed potential OutOfMemory errors when reading broken archives
   using the tar or zip formats or formats derived from zip.

Other changes:

 * now
   has a new protected createExecuteWatchdog() method for allowing it to be overriden.
   Github Pull Request #147

 * Upgraded AntUnit to 1.4.1.