Also switch over to tar.bz2 archive.
Changes since 1.5.3:
Fixed bugs:
-----------
* The Visual Age for Java tasks didn't work (at least for versions 3.0
and higher). Bugzilla Report 10016.
* URL-encoding in <vaj*port> didn't work properly.
* VAJRemoteUtil called getAbsolutePath instead of getPath
causing problems when using a Windows VAJ server from a UNIX server.
Bugzilla Report 20457.
* VAJImport task failed with NullPointerException when using DirectoryScanner.
Bugzilla Report 22080.
Other changes:
--------------
* Shipped XML parser is now Xerces 2.5.0
* <javah> will invoke oldjavah on JDK 1.4.2. Bugzilla Report 18667.
* The VAJ tasks now support a haltonfailure attribute to conditionally
keep building even if they fail.
* It is now possible to use the latest (versioned or unversioned) edition
in <vajload> by using special wildcard characters. Also fixes
Bugzilla Report 2236.
