Question about libgcj license and header file inclusion

Wed Mar 29 21:48:00 GMT 2006

Hello,
I’ve been reading through the LIBGCJ_LICENSE file as well as the GNU GPL, and I have a question about including header files with this license in proprietary modules. Can one include headers with this license in a proprietary module without making the module GPL? Specifically, can one include jni.h from a proprietary C module? There is no explicit clause that I could see which would permit this, which is different from the libstdc++ exception. 
Forgive me if this has already been answered elsewhere.
Thanks in advance,
Jeremy Felix