Bug 33897 [Import/Export] Export to .tar.gz or .tar.bz2
Right click a Java project. Choose "Export...". A window opens where you can choose between different export targets. There is no ".tar.gz" target or ".tar.bz2". I would like to have either one (or both). If I must choose one, I prefer ".tar.bz2", but I don't really have a strong opinion about it; ".tar.gz" would be fine as well. The reason I somewhat prefer bzip2 is that bzip2 makes files noticably smaller than gzip, and my impression is that gzip is slowly being outcompeted. A Linux-GTK implementation would be good enough for me, but it is possible that "Unix All" would be a better platform as other Unix users could probably be interested in this as well.
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/internal/wizards/datatransfer/ZipFileExportOperation.java
this(res, filename);
        resourcesToExport = resources;
    }
    /**
     * Add a new entry to the error table with the passed information
     */
    protected void addError(String message, Throwable e) {
        errorTable.add(new Status(IStatus.ERROR,
                IDEWorkbenchPlugin.IDE_WORKBENCH, 0, message, e));
    }
    /**
     *  Answer the total number of file resources that exist at or below self
     *  in the resources hierarchy.
     *
     *  @return int
     *  @param checkResource org.eclipse.core.resources.IResource
     */
    protected int countChildrenOf(IResource checkResource) throws CoreException {
        if (checkResource.getType() == IResource.FILE)
            return 1;
        int count = 0;
        if (checkResource.isAccessible()) {
            IResource[] children = ((IContainer) checkResource).members();
            for (int i = 0; i < children.length; i++)
                count += countChildrenOf(children[i]);
        }
        return count;
    }
    /**
     *	Answer a boolean indicating the number of file resources that were