Is there any way to include from outside the template root directory?

I am using FreeMarker with FMPP to generate files from the command line
from XML source files. To do that, I have created a lot of macros that
simplify accessing the information in that kind of XML files.

This should work with a number of different templates, each in their own
template dir to generate different kinds of output files. But for all of
them I would need the same set of macros! So ideally, the macros would
be *outside* each of the template directories and shared by them -- but
this seems to be impossible because <#include> always stays inside the
template directory.

Is there any way, any trick tom make <#include "../../somefile.ftl">
work when that relative path points outside the template directory? This
would be great in cases where the user actually knows what he is doing.

Any help would be greatly appreciated -- this would immensely simplify
the maintenance of the files that contain all those macros that I
need to share between the different template directories.

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