classpath configure update?

Hi all,

I recently pushed a commit to gcc head and gcc-4.6 to fix the detection 
of FreeBSD-10.

http://gcc.gnu.org/ml/gcc-cvs/2011-11/msg00886.html

Now I see that I need to do that for libjava/classpath/configure too.

My question, how do I do that? Means, can I simply commit the fix to the 
gcc/libjava/classpath and don't care about upstream classpath?
Or how do I proceed?

Thanks for your help.
Andreas