Create a jvm.cfg for zero on 32 bit architectures

From Omair Majid on build-dev:

OpenJDK fails to build with zero currently on 32 bit architectures.
There's a non-architecture-specific compilation error that I fixed [1].
That makes zero build/run on 64-bit architectures. However, the build
still fails on 32-bit. The error says that a jvm.cfg can not be found
for zero.