allow symlinks in bookpath

[bertsky]

Now that METS (and rotation) is supported, there is no need to export to LAREX from OCR-D (and back) anymore. However, that also means I will need a central storage location for all my workspaces, which is quite inconvenient. Symlinked directories still do not seem to be supported (probably because Jetty/Catalina/Tomcat prohibit this for security reasons) – they are simply ignored.

Now, the default /usr/local/tomcat/conf/context.xml sets up permissions like this:

<!-- The contents of this file will be loaded for each web application -->
<Context><Resources allowLinking="true"/>

    <!-- Default set of monitored resources. If one of these changes, the    -->
    <!-- web application will be reloaded.                                   -->
    <WatchedResource>WEB-INF/web.xml</WatchedResource>
    <WatchedResource>WEB-INF/tomcat-web.xml</WatchedResource>
    <WatchedResource>${catalina.base}/conf/web.xml</WatchedResource>

    <!-- Uncomment this to disable session persistence across Tomcat restarts -->
    <!--
    <Manager pathname="" />
    -->
</Context>

Which means some linking should already be allowed. Any ideas what I could try to get past this barrier?