libgcj snapshot build fails

[Tom Tromey]

>>>>> "Steven" == Steven Ashe <ashe@boulder.qms.com> writes:

Steven> When building either 21 Oct or 22 Oct libgcj snapshots:
Steven> .libs/libgcj.so: undefined reference to `_Jv_Compiler_Properties'

If you use the latest libgcj you will also need the latest gcj.  I
made a parallel change to jvgenmain and libgcj.

Tom