How to link source files among several components

We're going to try Jazz platform for a development cycle.
We are planning to transfer the code from the current SCM system (CMVC) to Jazz.
This product is a suite, which, under Jazz, will be made up of several streams, each of which has several components.
Our issue is that some files are common to several components, but we don't know how to implement it in Jazz.
A source project (e.g. a java project) can't belong to two Jazz components, so we
don't know how to implement it without heavily restructuring the code.
We would like to be able to put a source project into more than one components, so that
we don't need to duplicate the code and keep it aligned manually.
Differently stated, two components should be able to contain the link to the same project,
of course maintaining the "conflict resolving" feature that Jazz provides.

Thanks in advance,
Claudio