[java/c++/rfc] avoid plt references to cni methods

[Andrew Haley]

Richard Henderson writes:
 > I've checked in the patch to mainline with the "GA" change.  With
 > this plus an additional patch to libgcj to deal with function 
 > descriptors, I now get perfect libjava results on alpha, ia64,
 > and ppc32.  ppc64 is in much better shape; there are now 2 failures.
 > 
 > I have an additional patch for the demangler, which i will post
 > shortly.

Thank you.

Andrew.